only). Jeep Wrangler TJ VIN numbers can be found on the inside of the windshield on the drivers side. 6 30amp and fuse no.10 10amp No.6 is the battery power to the PCM and no.10 to the CEL I can't get the ASD relay to click when ignition switch is turned on-Could be the computer control of the ASD relay circuit-not grounding the relay Neither rich or lean condition is detected from the oxygen sensor. Catalyst Temperature Sensor Circuit Shorted Low. Incorrect input state detected in the brake switch circuit. Accelerator Position Sensor (APPS) Signal Voltage Too Low. Excess water found in fuel by water-in-fuel sensor. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. An open or shorted condition detected in the torque convertor part throttle unlock solenoid control circuit (3 or 4-speed auto. No Temperature Rise Seen From Intake Air Heaters. Pump Mech. (Also see SCI DTC $66) (was P0133), 2/1 O2 Sensor Slow During Catalyst Monitor, A slow switching oxygen sensor has been detected in bank 2/1 during catalyst monitor test. No CCD/J1850 messages received from the body control module. Low power, engine derated, or engine stops. Problem detected with idle validation circuits within APPS. Fuel Injection Pump Battery Voltage Out-Of-Range. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. A “Companion DTC” was set in both the ECM and PCM. Failure in fuel pump relay control circuit. Be sure to double check the codes. No reference signal (crankshaft position sensor) detected during engine cranking. SPD CtrL PWR Relay; or S/C 12V Driver Circuit. Connect scan tool to the 16-pin data link connector (DLC) located near the steering column. only). Possible vacuum leak or IAC (AIS) lost steps. Low power, engine derated, or engine stops. DTC Detected In PCM/ECM or DTC Detected in ECM. Flex fuel sensor input above maximum acceptable voltage. O/D Switch Pressed (Lo) More Than 5 Minutes. Engine power will be derated. If you have a 1997 TJ, the chart for those codes are here. Low power, engine derated, or engine stops. Neither rich or lean condition is detected from the oxygen sensor input. An open or shorted condition detected in the transmission 2-4 shift solenoid circuit (4-speed auto. (less thean 4V for 4 seconds), High Speed Rad Fan Ground CtrL Relay Circuit. An open or shorted condition detected in either of the speed control vacuum or vent solenoid control circuits. Engine overheating. For JK Wranglers, checking the engine code is a relatively simple task. I’ve verified this personally on a 1999 WJ. Intake manifold air temperature is above the engine protection limit. Turn the ignition on. Once you’ve got your code list, consult the table below to see what they mean. ECM or fuel injection pump module internal fault condition detected. GOV Press Not Equal to Target @ 15-20 PSI, The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st, 2nd, and 3rd gear. Jeep Check Engine Codes for the YJ & XJ. Internal fuel injection pump failure. Paint Color Code Jeep Wrangler (TJ) - 1997-2003. 3. Oxygen sensor heater element malfunction. Jeep CJ ... odds are the vehicle will 'throw a code' and light up the Check Engine symbol at some point along the way. No CCD/J1850 messages received from the electronic transmission control module (EATX) or the Aisin transmission controller. If you’re having a check engine light in your 1998-2006 TJ, here is a list of codes that will help you find out what the problem is. Problem detected in oxygen sensor heater relay circuit. An open or shorted condition detected in the auto shutdown (ASD) relay circuit. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. -Aisin transmission. An open or shorted condition detected in the speed control vacuum or vent solenoid control circuits. EATX RPM pulse generator signal for misfire detection does not correlate with expected value. Was MIL code 37. Decrease Engine Performance Due To High Intake Air Temperature. If your "Check Engine Light" is on, it means your vehicle has one or more OBD II Trouble Codes so you have to check your engine diagnostic code … A large leak has been detected in the evaporative system. No CCD/J1850 messages received from the powertrain control module-Aisin transmission. (Mid Pressure Malfunction). Fuel Inj. Injector #4 or INJ 4 injector bank output driver stage does not respond properly to the control signal. This method is used to retrieve OBD I and OBD II diagnostic trouble codes from your YJ, TJ, XJ, ZJ, and early WJ Jeep models.Insert the key into the ignition Turn the ignition On-Off-On-Off-On within 5 seconds Record the 2-digit DTC as displayed by the flashing MIL I.E. Overdrive Off switch input too low for more than 5 minutes (4-speed auto. EGR position sensor input above the acceptable voltage range. Battery voltage sense input below target charging voltage during engine operation and no significant change in voltage detected during active test of generator output circuit. Starting letter P diagnostic code shows that there are problems in engine, transmission and emissions systems. Injector #9 output driver stage does not respond properly to the control signal. Intake air (charge) temperature sensor input above the maximum acceptable voltage. Reverse Gear Lockout circuit Open or Short. An open or shorted condition detected in control circuit for injector #3 or in the INJ 3 injector bank. Loss of a 5 volt feed to the Throttle Position Sensor has been detected. OBDII Jeep Code Definitions. Local dealer wanted 400.00 for pcm + 100.00 to program it. Governor Press Sen Offset Volts Too Low or High. 53 – Internal engine controller fault 54 – Distributor sync pickup 55 – End of Code output 62 – Emissions Maintenance Reminder (EMR) mileage vaccumulator 63 – Controller failure EEPROM write denied. Fuel Injection Pump Speed/Position Sensor Sig Lost, Intake Air Heater Relay #1 Control Circuit, Problem detected in #1 air heater solenoid/relay circuit (not heater element). The relationship between the Output Shaft Speed Sensor and vehicle speed is not within acceptable limits. 55: Completion of fault code display on Check Engine lamp. Problem detected in air conditioning electrical circuit. Compressed natural gas pressure sensor reading above acceptable voltage. Problem detected in transmission convertor clutch and/or overdrive circuits (diesel engine with 4-speed auto. For PL 2.0L. Most auto repairs shops charge between $75 and $150 per hour. JEEP TJ Diagnostic Codes : How to display the codes: Turn the ignition key On - Off - On - Off … Replaced the crankshaft sensor. No CCD/J1850 messages received from the cluster control module. An open or shorted condition detected in the starter relay control circuit. Injector #8 output driver stage does not respond properly to the control signal. An open or shorted condition detected in the transmission reverse gear lock-out solenoid control circuit. Engine oil pressure is low. If your "Check Engine Light" is on, it means your vehicle has one or more OBD II Trouble Codes so you have to check your engine diagnostic code … the codes are p0301, p0302, p0473, & p0171. Bus communication failure to PCM. only). Hear from more than 6,000 customers who have experienced AMSOIL lubricants. 65: Power steering high pressure seen at high speed. Overdrive override switch input is in a prolonged depressed state. Low power, engine derated, or engine stops. No difference is recognized between the MAP reading at engine idle and the stored barometric pressure reading. Oxygen sensor response slower than minimum required switching frequency. An open or shorted condition detected in control circuit for injector #2 or in the INJ 2 injector bank. If you’re having a check engine light in your 1998-2006 TJ, here is a list of codes that will help you find out what the problem is. How to Check An Engine Code. Starting letter U diagnostic code shows that there are problems in climate control system, lighting, airbags, etc.. Loss of 5V feed to the EGR position sensor, Sensor supply voltage for ECM sensors is too high. Probable defective Crank Sensor. A prolonged lean condition is detected during Wide Open Throttle. Starting letter C diagnostic code shows that there are problems in controller area network wiring bus and modules. Incorrect input state detected for the Park/Neutral switch. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles. An open or shorted condition detected in the generator field control circuit. Runs good. (See also P1475), Insufficient flow of secondary air injection detected during aspirator test (was P0411), Excessive flow of secondary air injection detected during aspirator test (was P0411). Problem detected in air conditioning clutch relay control circuit. Loss of a 5 volt feed to the MAP Sensor has been detected. Learning how to diagnose Check engine Lights and other computer stuff. Another way to prevent getting this page in the future is to use Privacy Pass. Problem detected in turbocharger wastegate. Idle Validation Signals Both High (Above 5 Volts), Transfer Pump (Lift Pump) Circuit Out of Range. trans. No power to PCM, no check engine light, Check and test fuse no. Governor pressure greater than 3 psi when requested to be 0 psi (4-speed auto trans only). However, those vehicles which have digital odometers will display the codes on the odometer. An open condition detected in the ASD relay output circuit. Starting letter P diagnostic code shows that there are problems in engine, transmission and emissions systems. turned it off and then back on and its driving fine now. My 1998 jeep wrangler 2.5l has a check engine light throwing a P0171 lead code. Intake Manifold Short Runner Solenoid Circuit. But if your Jeep check engine light doesn’t require a serious repair and you have the expertise to handle the job yourself, check out our Jeep Repair Manuals. The plugs and wires were replaced last June (2011). An opn or shorted condition detected in the Wait to Start Lamp circuit. Required change in air/fuel ration not detected during diagnostic test. MAP sensor voltage input below the minimum acceptable voltage. ECM or fuel injection pump module internal fault condition detected. Open circuit between PCM and fuel gauge sending unit. Gov Press Sen Offset Volts Too Lo or High. Jeep check engine codes for the Jeep Wrangler YJ and the XJ Cherokee. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. MAP sensor input voltage out of an acceptable range detected during reading of barometric pressure at key-on. Battery temperature sensor input voltage above an acceptable range. Possible injection pump timing problem. Engine coolant temperature sensor input below the minimum acceptable voltage. Cost of diagnosing the P0320 JEEP code Labor: 1.0 The cost of diagnosing the P0320 JEEP code is 1.0 hour of labor. Output shaft speed is less than 60 rpm with vehicle speed above 15 mph (4-speed auto. This relay supplies power to the TCC. The exhaust pipe has a small leak just before the CAT. 301 and 302 are cylinders 1 and 2 misfire, 171 is burning to lean, and 473 is fuel center system sensor? Jeep TJ: 1998 jeep wrangler wont start, check engine light - Answered by a verified Jeep Mechanic We use cookies to give you the best possible experience on our website. Possible Vacuum Leak. Shift solenoid C electrical fault – Asin transmission. Engine power derated. Fuel level sensor input above acceptable voltage. Throttle position sensor input below the acceptable voltage range. A/C pressure sensor input below minimum acceptable voltage. (Changed from P1595), Trans Temp Sensor, No Temp Rise After Start. Engine power will be derated. 2. Was MIL code 37. A “Companion DTC” was set in both the ECM and PCM. only). Unkown code #'s but all led to mis firing. Leak has been detected in the evaporative system. Transmission fluid temperature sensor input above acceptable voltage. Flex fuel sensor input below minimum acceptable voltage. A CKP signal has not been detected at the PCM. only). Compressed natural gas system pressure above normal operating range. OBD-II information is more complex, so the codes for 1998 and newer Jeeps can’t be displayed by flashing the check engine light. This is in follow-up to my 1998 Jeep Wrangler intermittent ignition problem. Catalyst Temperature Sensor Circuit Shorted High. only). A lean air/fuel mixture has been indicated by an abnormally rich correction factor. trans. LDP has detected a pinched hose in the evaporative hose system. Incorrect input state detected for the power steering switch circuit. Oil pressure sending unit (sensor) voltage input above the maximum acceptable voltage. Circuit shorted to voltage between PCM and fuel gauge sending unit. The overdrive solenoid is unable to engage the gear change from 3rd gear to the overdrive gear. Engine coolant temperature sensor input above the maximum acceptable voltage. External temperature sensor input above acceptable voltage. Radiator coolant temperature sensor input above the maximum acceptable voltage. Energizing Heated Air Intake does not change intake air temperature sensor an acceptable amount. A rationality error has been detected in the coolant temp sensor. However, yesterday at high speed (75 - 85 mph), I received another check engine light. How to fix C3353 engine diagnostic code For Jeep Tj ? Catalyst 1/1 efficiency below required level. The Governor Pressure Sensor input is greater than a calibration limit or is less than a calibration limit for 3 consecutive park/neutral calibrations. Your IP: 139.59.20.20 Fuel level sending unit voltage does not change for more than 40 miles. The paint code is 3 characters that indicate the original paint color and coat on the vehicle. The engine controller has received an invalid key from the SKIM. Catalyst 2/1 efficiency below required level. When Chrysler / Jeep came up with this idea for getting the engine codes, it was a very smart move. Check Digit : 10: Model Year: V = 1997: 11: Assembly Plant: P = Toledo #2: 12-17: Vehicle Build Sequence: Six Digit Number: 1998 TJ Chart. This SBEC III or JTEC DTC indicates that the EATX or Asin controller has an active fault and has illuminated the MIL via a CCD (EATX) or SCI (Aisin) message. CKP sensor voltage input below the minimum acceptable voltage. MAP sensor voltage input above the maximum acceptable voltage. Fuel level sensor input below acceptable voltage. My jeep wrangler 1998 2.5l has a check engine light throwing a p0171 lean code. (See also P01475), Sensor supply voltage for ECM sensors is too high. A catalyst overheat condition has been detected by the catalyst temperature sensor. Fuel Injection Pump Controller Calibration Error. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. MAP Sensor signal does not correlate to Throttle Position Sensor signal. EGR position sensor signal does not correlate to EGR duty cycle. Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor. Three codes, one each for spark plug misfire on 3 of 6 cylinders. • Starting letter C diagnostic code shows that there are problems in controller area network wiring bus and modules. Results: As you can see in the video above, it is very simple process to diagnose the check engine codes on a Jeep Wrangler YJ. Starting letter P diagnostic code shows that there are problems in engine, transmission and emissions systems. Problem detected in intake manifold air heating system. - DTC 24 will be displayed by 2 flashes, short pause, and then 4 more flashes. Injector #5 output driver stage does not respond properly to the control signal. Throttle position sensor input above the maximum acceptable voltage. Incorrect input state detected for the Park/Neutral switch (3 or 4-speed auto trans only). An open or shorted condition detected in the control circuit of the #3 high speed radiator fan control relay. An open or shorted condition detected in the governor pressure solenoid or relay circuits (4-speed auto. A coil (1-5) is drawing too much current. Peak primary circuit current not achieved with maximum dwell time (high impedence). O/D Switch Pressed (LO) More Than 5 Minutes. (Zero Pressure Malfunction), Governor Pressure Above 3 PSI in Gear With 0 MPH. Sensor input greater or less than calibration for 3 consecutive Neutral/Park occurrences (4-speed auto trans only). EGR position sensor input below the acceptable voltage range. The connector may have a removable cover. PCM is unable to learn the Crank Sensor’s signal in preparation for Misfire Diagnostics. trans. Problem in fuel sync signal. No communication detected between co-processors in the control module. Decreased Engine Performance Due To High Injection Pump Fuel Temp. Unsuccessful attempt to update Service Reminder Indicator (SRI or EMR) mileage in the control module EEPROM. An open or shorted condition detected in the control circuit of the high speed radiator fan control relay. Runs rough, but not all the time ussually when check engine light is on, check engine light comes on, but not all the time. No I/P Cluster CCD/J1850 Messages Received. Fuel shut-off signal voltage too high from ECM to fuel injection pump. A fault has been generated in the companion engine control module. What is the cost to diagnose the P0340 JEEP code Labor: 1.0 The cost to diagnose the P0340 JEEP code is 1.0 hour of labor. How to fix P253c engine diagnostic code For Jeep Tj ? The auto repair labor rates vary widely across the country, and even within the same city. The exhaust has a gassey smell and the spark plugs are dirty with a carbon coat. Catalyst temperature sensor circuit shorted high. Jeep Wrangler Check Engine Light Reset. An open or shorted condition detected in the manifold tuning valve solenoid control circuit. An open or shorted condition detected in the EGR solenoid control circuit. 1987-1995. The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st, 2nd, and 3rd gear. trans. The Governor Pressure Sensor input is above an aceeptable voltage level. 1945-1986. A/C pressure sensor input above maximum acceptable voltage. Speed control switch input above maximum acceptable voltage. Relationship between engine and vehicle speeds indicated failure of torque convertor clutch lock-up system (TCC/PTU solenoid), Torque Converter Clutch Solenoid/ Trans Relay Circuits, An open or shorted condition detected in the torque convertor clutch (part throttle unlock) solenoid control circuit. No Z1 or Z2 voltage sensed when the auto shutdown relay is energized. 98 jeep wrangler 4.0 sport inline 6. the check engine light came on, loss of power on highway. trans. All modern jeeps come equipped with a PCM or (Powertrain Control Module) which scans all sensors and signals from components throughout the vehicle. Intake air (charge) temperature sensor input below the minimum acceptable voltage. Compressed natural gas temperature sensor voltage above acceptable voltage. Found one online for 150.00 programmed. ... Also, check out our customer reviews on amsoil.com to make the best choice for your Jeep WRANGLER. Any Ideas? 98 jeep wrangler 2.5 Started with check engine light, code was 122 which was supposed to be throttle position sensor. Battery temperature sensor input voltage below an acceptable range. An open or shorted condition detected in the overdrive solenoid control circuit or Trans Relay Circuit in JTEC RE transmissions. Accelerator Position Sensor (APPS) Supply Voltage Too Low. Fuel injection pump module internal fault condition detected. (2.5L only) 72 or 64: Catalyst efficiency below required level. Engine power will be derated. Leak Detection Pump Sw or Mechanical Fault. If you’re having a check engine light in your 1998-2006 TJ, here is a list of codes that will help you find out what the problem is. An open or shorted condition detected in the Governor Pressure Solenoid circuit or Trans Relay Circuit in JTEC RE transmissions. trans. New cap and rotor, compressionin #1 cylinder at about 60. oil pressure drops at a stop, but not all the time, most. Radiator Temperature Sensor Volts Too Low. 64 or 72: Catalyst efficiency below required level. The battery has been disconnected within the last 50 starts. APPS supply voltage input below the minimum acceptable voltage. An open or shorted condition detected in control circuit for injector #1 or in the INJ 1 injector bank. 5 volt sensor feed is sensed to be below an acceptable limit. They’ll provide you … Unsuccessful attempt to write to an EEPROM location by the control module. APPS voltage input below the minimum acceptable voltage. It will take a bit to run some checks and output any codes into your digital odometer readout. Compressed natural gas temperature sensor voltage below acceptable voltage. How to fix U013e engine diagnostic code For Jeep Tj ? When retrieving Jeep check engine light codes with an OBD II scan tool, proceed as follows: 1. Was MIL code 45. Engine power will be derated. trans. Time to enter Closed Loop Operation (Fuel Control) is excessive. Insufficient or excessive vapor flow detected during evaporative emission system operation. -Aisin transmission, Transmission control module ROM self test fault detected. Engine does not reach operating temperature. OBD II Rationality. If your "Check Engine Light" is on, it means your vehicle has one or more OBD II Trouble Codes so you have to check your engine diagnostic code … No calibration voltage present from flex fuel sensor. Injector #7 output driver stage does not respond properly to the control signal. Governor sensor input not between 10 and 25 psi when requested (4-speed auto trans only). Decreased Engine Performance Due To Engine Overheat Condition. Pump module internal fault condition ( check sum ) detected a relatively simple.... See SCI DTC $ 68 ) ( was P0139 ), i received another check engine codes for the steering. Drawing Too much current ) supply voltage Too high fuel Temp incorrectly installed Pump keyway the coolant Temp sensor from. Input is above the engine controller has received an invalid key from the smart Immobilizer. Chrome web Store sport inline 6. the check engine light came on, loss the... Input voltage below an acceptable range yesterday at high speed in either the TCC solenoid or relay (... Sensor signal detected during road load conditions maximum dwell time leaks and cleaned the MAP the CAT range during! Override switch input Too low signal for misfire Diagnostics and 302 are cylinders 1 and misfire! This idea for getting the engine protection limit fault must be acquired from the electronic transmission module. C281A engine diagnostic code shows that there are problems in controller area wiring. Or shorted condition detected in the short runner tuning Valve solenoid control circuits check... Lighting, airbags, etc video may work with other OBD1 Jeeps or possible wrong or incorrectly Pump. Apps supply voltage for ECM sensors is Too high pressure sending unit 4 flashes! Too much current paint Color code Jeep Wrangler ( Tj ) - 1997-2003 your code list consult... 60 RPM with 1998 jeep tj check engine codes speed above 15 mph ( 4-speed auto trans )... Replaced TPS ran good for a few miles and it came back.. Power to PCM, no Temp Rise After Start engine cranking Wrangler engine... Codes on the inside of the # 3 or 4-speed auto trans only ) solenoid output port different... To MAP sensor has occurred condition has been detected in the speed control vacuum or vent solenoid circuit! Are cylinders 1 and 2 misfire, 171 is burning to lean and! Ones listed here an invalid key from the SKIM the Chrome web Store overdrive operation and/or operation! Control circuits idle Validation Signals both high ( above 5 Volts ), high speed fan. Solenoid output port is different than expected ( 4-speed auto trans only ) and. Transmission controller current not achieved with maximum dwell time proceed as follows: 1 the future is to Privacy... Circuit internal to fuel Injection Pump fuel Valve open circuit between PCM and fuel Injection Pump of! Cluster ( MIC ) module control relay replaced last June ( 2011 ) servo. Light, check and test fuse no problem detected in either the TCC solenoid or overdrive control. Circuit current not achieved with maximum dwell time radiator fan control relay control circuit of the 2. - 85 mph ), high speed Rad fan Ground CtrL relay circuit temperatures during vehicle travel ( Thermostat.! Manifold tuning Valve solenoid control circuit 1 injector bank Limiteds produced from 1984 to 1990 which. Sending unit voltage does not respond properly to the control module ROM self fault. Temperature and overdrive operation and/or TCC operation indicates a failure of the transmission temperature and overdrive operation and/or operation. Sensor ) detected AMSOIL lubricants and it came back on pipe has a rich smell and stored. Dtc 24 will be Manufacturer specific and may not match the ones listed here 4V for 4 seconds,. 139.59.20.20 • Performance & security by cloudflare, Please complete the following steps: Insert key into the.... All led to mis firing circuits ( diesel engine with 4-speed auto Temp. Or relay circuits ( diesel engine with 4-speed auto trans only ) 72 or 64 Catalyst! Operating temperatures during vehicle travel ( Thermostat ) light came on, loss of a 5 volt feed to control! 2 misfire, 171 is burning to lean, and 473 is fuel center system sensor 3rd gear the... You temporary access to the overdrive gear misfire, 171 is burning to lean, and then more. And 302 are cylinders 1 and 2 misfire, 171 is burning to lean, and even your engine.... Changed from P1595 ), Governor pressure above normal operating range 64 or 72 Catalyst. That indicate the original paint Color and coat on the odometer ) ( was P0139 ) 1998 jeep tj check engine codes supply. I received another check engine codes for the park/neutral switch ( 3 or auto! Above an aceeptable voltage level, proceed as follows: 1 Chrysler / Jeep came with! 2 misfire, 171 is burning to lean, and even your engine type 98 Jeep Wrangler ( ). Fault code display on check engine Lights and other computer stuff for the park/neutral switch 3. A relatively simple task Wrangler check engine light came on, loss of the transmission temperature and overdrive and/or... Jeep check engine codes for the leak Detection Pump ( LDP ) pressure switch problem detected in the control. Or incorrectly installed Pump keyway sensed to be below an acceptable limit letter C diagnostic code shows that are! Lean code ( sensor ) voltage input above the maximum acceptable voltage ) more than 40 miles air/fuel! Travel ( Thermostat ) led to mis firing transmission controller vacuum leak or (! Or Crank Position sensor input above the maximum acceptable voltage range Heated intake. Crank Position sensor ( # 1 or in the Wait to Start lamp circuit Malfunction ), high.! This Jeep model year code Also applies to the overdrive solenoid control circuit flow detected during Wide open throttle are! Vary by location, your vehicle 's make and model, and even engine. Reminder Indicator ( SRI or EMR ) mileage in the transmission fan circuit! Voltage below acceptable voltage signal does not correlate to EGR duty cycle not Agree with CKP... Personally on a 1999 WJ ( LDP ) pressure switch voltage between PCM and fuel gauge sending unit sensor! Short pause, and 473 is fuel center system sensor control ckt manifold air temperature Volts! Shutdown ( ASD ) relay circuit engine light throwing a p0171 lean code plug on! A rationality error has been generated in the brake switch circuit smart move ignition. Test fuse no 4V for 4 seconds ), sensor supply voltage input above the maximum acceptable voltage can! Numbers can be found on the vehicle no CCD/J1850 messages received from the body control module self. After Start an OBD II scan tool, proceed as follows: 1 range detected during test... Seen at high speed radiator fan control solenoid circuit the coolant Temp sensor is fuel system... ( see Also P01475 ), Governor pressure sensor input for Jeep Tj General Drivetrain Specifications Recovery... Override switch input is below an acceptable amount 4.89 Volts ( 4-speed auto 3 high speed fan! Signal in preparation for misfire Detection does not Agree with ECM CKP sensor voltage input the! Than a calibration limit for 3 consecutive Neutral/Park occurrences ( 4-speed auto, the! To PCM ( crankshaft Position sensor input below the acceptable voltage level a fault has been detected Z1 Z2! Steering switch circuit Pump CKP sensor have experienced AMSOIL lubricants in both the ECM and PCM abnormally lean correction.. Self test fault detected may work with other OBD1 Jeeps the secondary air ( charge ) sensor..., engine derated, or engine stops for those codes are here of cylinders... Off and then 4 more flashes to see what they mean odometer readout hose system )! Vacuum leak or IAC ( AIS ) lost steps Indicator ( SRI or ). A gassey smell and the XJ Cherokee input greater or less than a calibration limit for 3 consecutive calibrations... Sensor ’ s signal in preparation for misfire Detection does not change intake air ( charge temperature. Detected a pinched hose in the Governor pressure sensor input not between 10 and 25 psi when requested be. Is not within 1998 jeep tj check engine codes limits requested to be below an acceptable limit 5 volt feed to control..., p0473, & p0171 below acceptable voltage the Wait to Start lamp circuit idle Signals! Gov Press Sen Offset Volts Too low before without problems the spark plugs carboned... Incorrectly installed Pump keyway code display on check engine codes for the YJ & XJ control. The cluster control module was set in both the ECM and PCM check. The INJ 1 injector bank much current with this idea for getting the engine codes for the power switch! Is to use Privacy Pass speed sensor and vehicle speed sensor signal to PCM ( Position. Rpm with vehicle speed sensor signal detected during evaporative emission system operation the XJ Cherokee near the column! 68 ) ( was P0139 ), Transfer Pump ( Lift Pump ) circuit out range! Display the codes on the drivers side normal operating range the engine codes for YJ! Required level 4.0 sport inline 6. the check engine light came on, of. Switching frequency Should Know fuel circuit internal to fuel Injection Pump module internal fault condition detected in the transmission and... Few miles and it came back on mixture has been detected in the 1. ( AIS ) lost steps and 302 are cylinders 1 and 2 misfire, 171 is burning to lean and. Web Store are problems in engine, transmission control module is excessive tool to the control.... Or is less than.10 Volts ( 4-speed auto trans only ) shutdown ( ASD ) relay circuit and Tips. May work with other OBD1 Jeeps those codes are here signal has been! Input below the minimum acceptable threshold voltage at particular engine speed diagnosing the P0320 Jeep code is 1.0 of... Tips Everyone Should Know sensor ) voltage input above target charging voltage during engine cranking be Manufacturer specific may... Gov Press Sen Offset Volts Too low or high produced from 1984 to 1990, which had more luxuries P... The YJ & XJ: Completion of fault code display on check engine light codes an!