Required change in air/fuel ration not detected during diagnostic test. Unsuccessful attempt to update Service Reminder Indicator (SRI or EMR) mileage in the control module EEPROM. Throttle position sensor input below the acceptable voltage range. Flex fuel sensor input below minimum acceptable voltage. A small leak has been detected in the evaporative system. They included the Wrangler Unlimited, or four-door Wrangler. For JK Wranglers, checking the engine code is a relatively simple task. 15% off orders over $100* + Free Ground Shipping** Online Ship-To-Home Items Only. I checked my sensor codes on the odometer and the codes are P2096, P0137, P0158 and sometimes P0157. 99. Overdrive override switch input is in a prolonged depressed state. A/C pressure sensor input above maximum acceptable voltage. AN open or shorted condition detected in the transmission 2-3 gear lock-out solenoid control circuit. OBDII Jeep Code Definitions. TJ: These Jeep Wranglers were produced from 1997 to 2006, and they replaced the YJ. P0712: Trans Temp Sensor Voltage Too Low: Transmission fluid temperature sensor input below acceptable voltage. Use Code: GIFT4YOU. Great Info. Fuel level sensor input below acceptable voltage. Problem detected in intake manifold air heating system. OBD II Rationality. ... Bestop Underseat Locking Storage Box for 1997-2006 Jeep Wrangler and 1997-2006 Jeep TJ (17 reviews) Code: B4264101. No difference is recognized between the MAP reading at engine idle and the stored barometric pressure reading. Possible vacuum leak or IAC (AIS) lost steps. 2007-2018. 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. An open or shorted condition detected in the cooling fan control solenoid circuit. How to Check An Engine Code. any service bulitins regarding this problem? Here is a little summary of it , the ECM is the brain of the vehicle and just like everything else you’re going to have to reset it and test it to make sure it’s in a great working condition. Shift solenoid C electrical fault - Asin transmission. trans. Use Code: GIFT4YOU ... 2004 Jeep Wrangler Cooling, ... Use Code: DIYSAVE10 Online Ship-to-Home Orders Only. Chrysler Jeep Vehicle Order Codes. No calibration voltage present from flex fuel sensor. Loss of the Cam Position Sensor or Crank Position sensor has occurred. A/C pressure sensor input below minimum acceptable voltage. Peak primary circuit current not achieved with maximum dwell time. Accelerator Position Sensor (APPS) Supply Voltage Too Low. EGR position sensor input below the acceptable voltage range. Voltage less than 1.55 Volts (4-speed auto. Oxygen sensor input voltage maintained above normal operating range. Injector #6 output driver stage does not respond properly to the control signal. A CKP signal has not been detected at the PCM. APPS supply voltage input below the minimum acceptable voltage. A prolonged lean condition is detected during Wide Open Throttle. P0155 JEEP Meaning Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Intake Manifold Short Runner Solenoid Circuit. ... New book about building and modifying your 1997-2006 Jeep Wrangler TJ. Description. DTC Detected In PCM/ECM or DTC Detected in ECM. 4 Easy Steps to Diagnose your Engine Computer (PCM/ECM/ECU Control Module), How Much Does a Powertrain Control Module cost,  Back up power source ( Just in case you have an old battery ). An open or shorted condition detected in the torque convertor part throttle unlock solenoid control circuit (3 or 4-speed auto. Returning to Jeep’s CJ off-roading roots and incorporating the creature comforts of the YJ generation, the Jeep TJ seemed like the perfect … A "Companion DTC" was set in both the ECM and PCM. Turn to “ON” position without starting the Jeep. An open condition detected in the ASD relay output circuit. Insufficient or excessive vapor flow detected during evaporative emission system operation. Target RPM not achieved during drive idle condition. The engine controller has received an invalid key from the SKIM. MAP sensor input above maximum acceptable voltage. Problem caused by internal fuel injection pump failure. An open or shorted condition detected in the generator field control circuit. Relationship between the transmission temperature and overdrive operation and/or TCC operation indicates a failure of the Transmission Temperature Sensor. MAP Sensor signal does not correlate to Throttle Position Sensor signal. 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