B1B84 Jeep OBD Code Diagnostic Procedure

B1B84 Jeep OBD Code PASSENGER SEAT WEIGHT SENSOR 4 – LEFT REAR INPUT CIRCUIT HIGHFor a complete wiring diagram Refer to Section 8W. When Monitored: While the CAN bus ignition status is in IGN_RUN, the module checks the sensor input ranges.   Set Condition:If the module detects that the sensor input is greater than 96…

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P0711 Jeep OBD Code Diagnostic Procedure

P0711 Jeep OBD Code TRANSMISSION TEMPERATURE SENSOR PERFORMANCE For a complete wiring diagram Refer to Section 8W. Theory of Operation The temperature sensor is used to sense the temperature of the transmission fluid. Transmission fluid temperature can affect shift quality, torque converter operation and when or if some diagnostics are run. A failed temperature sensor…

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P128C Jeep OBD Code Diagnostic Procedure

P128C Jeep OBD Code TCM POWER CONTROL CIRCUIT 2 HIGH – TIPMFor a complete wiring diagram Refer to Section 8W. When Monitored: With the ignition on. Battery voltage greater than 10 volts.   Set Condition:A shorted condition is detected in the TIPM TCM Power control circuit.   Possible Causes (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT SHORT TO…

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C1503 Jeep OBD Code Diagnostic Procedure

C1503 Jeep OBD Code TIRE PRESSURE SENSOR 3 INTERNAL For a complete wiring diagram Refer to Section 8W Theory of Operation The tire pressure sensor actively monitors the air pressure and air temperature inside the tire, the sensor internal battery status, and the radial acceleration of the wheel. Each sensor has a unique ID code….

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U1008 Jeep OBD Code Diagnostic Procedure

U1008 Jeep OBD Code LIN 1 BUS For a complete wiring diagram Refer to Section 8W When Monitored: Continuously while the VTSS is armed.   Set Condition:If the Intrusion Transceiver Module detects incorrect voltage on the LIN Bus circuit.   Possible Causes INTERMITTENT CONDITION (D122) LIN BUS CIRCUIT SHORT TO BATTERY (D122) LIN BUS CIRCUIT…

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P1715 Jeep OBD Code Diagnostic Procedure

P1715 Jeep OBD Code RESTRICTED MANUAL VALVE IN T3 RANGE For a complete wiring diagram Refer to Section 8W When Monitored: Whenever the PRNDL code indicates Temp 3. Set Condition:This DTC sets when conditions for the DTC P1776 are satisfied or 3 unsuccessful attempts to engage 1st gear while the shifter is in the temp…

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B1B88 Jeep OBD Code Diagnostic Procedure

B1B88 Jeep OBD Code PASSENGER SEAT WEIGHT SENSOR 1 – RIGHT REAR INPUT CIRCUIT LOW   For a complete wiring diagram Refer to Section 8W. When Monitored: While the CAN bus ignition status is in IGN_RUN, the module checks the sensor input ranges.   Set Condition:If the module detects that the sensor input is less…

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U1421 Jeep OBD Code Diagnostic Procedure

U1421 U1421 Jeep OBD Code IMPLAUSIBLE IGNITION KEY OFF TIME RECEIVED For a complete wiring diagram Refer to Section 8W When Monitored: At ignition on. Set Condition:The ECM detects a problem when comparing the current ECT Sensor input to the ECT Sensor input at the last ECM power down and the amount of time that…

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U0114 Jeep OBD Code Diagnostic Procedure

U0114 Jeep OBD Code LOST COMMUNICATION WITH FINAL DRIVE CONTROL MODULE (FDCM) For a complete wiring diagram Refer to Section 8W. When Monitored: With the ignition on. Battery voltage between 10 and 16 volts. IOD fuse installed. TIPM is configured correctly.   Set Condition:Bus messages not received from the Final Drive Control Module for approximately…

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P0734 Jeep OBD Code Diagnostic Procedure

P0734 Jeep OBD Code GEAR RATIO ERROR IN 4TH For a complete wiring diagram Refer to Section 8W Theory of Operation The transmission system uses two speed sensors, one to measure input rpm and one to measure output rpm. These inputs are essential for proper transmission operation. Therefore, the integrity of this data is verified…

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P2141 Jeep OBD Code Diagnostic Procedure

P2141 Jeep OBD Code EGR AIR FLOW CONTROL VALVE CIRCUIT LOW For a complete wiring diagram Refer to Section 8W Theory of Operation The EGR Air Flow Control Valve is a three-wire electrically operated throttle valve motor used to assist the EGR system function by creating a vacuum in the intake system to draw exhaust…

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B1BAA Jeep OBD Code Diagnostic Procedure

B1BAA OBD Code Definition OCCUPANT CLASSIFICATION MODULE CONFIGURATION MISMATCH   When Monitored: While the CAN bus ignition status is IGN_RUN.   Set Condition:This DTC will set if the ORC is not configured for Occupant Classification Module and the OCM is active on the CAN Bus. Note: Because all ORCs are originally configured for the OCM…

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P0124 Jeep OBD Code Diagnostic Procedure

P0124 Jeep OBD Code Definition: TPS/APP INTERMITTENT For a complete wiring diagram Refer to Section 8W. Theory of Operation The powertrain controller receives the throttle position signal from the Throttle Position Sensor (TPS). The controller provides the TPS with a 5 volt pull up and a sensor ground. The signal is checked for being out…

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P1790 Jeep OBD Code Diagnostic Procedure

P1790 Jeep OBD Code Definition: FAULT IMMEDIATELY AFTER SHIFT For a complete wiring diagram Refer to Section 8W. Theory of Operation This DTC is not stored alone. It is stored if a Gear Ratio DTC is detected immediately after shift. The existence of DTC P1790 indicates a mechanical or hydraulic (not electrical) related problems. It…

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B1BAA Jeep OBD Code Diagnostic Procedure

B1BAA Jeep OBD Code Definition: OCCUPANT CLASSIFICATION MODULE CONFIGURATION MISMATCH For a complete wiring diagram Refer to Section 8W. When Monitored: While the CAN bus ignition status is IGN_RUN.   Set Condition:This DTC will set if the ORC is not configured for Occupant Classification Module and the OCM is active on the CAN Bus. Note:…

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B1B7E Jeep OBD Code Diagnostic Procedure

B1B7E Jeep OBD Code Definition: PASSENGER SEAT WEIGHT SENSOR 2 – RIGHT FRONT INPUT CIRCUIT LOW For a complete wiring diagram Refer to Section 8W. When Monitored: While the CAN bus ignition status is in IGN_RUN, the module checks the sensor input ranges.   Set Condition:If the module detects that the sensor input is less…

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B2212 Jeep OBD Code Diagnostic Procedure

B2212 Jeep OBD Code Definition: OCCUPANT CLASSIFICATION MODULE INTERNAL When Monitored: While the IGN status is RUN or signal not available, while the CAN bus system voltage is between 10 and 16 volts, and during the OCS Verification Test. Set Condition:This DTC will set if the module detects an internal failure. Possible Causes OCCUPANT CLASSIFICATION…

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P1776 Jeep OBD Code Diagnostic Procedure

P1776 Jeep OBD Code Definition: SOLENOID SWITCH VALVE LATCHED IN LR POSITION For a complete wiring diagram Refer to Section 8W. Theory of Operation The Solenoid Switch Valve, an internal, hydraulically operated valve, controls the direction of the transmission fluid when the L/R solenoid is energized. When the solenoid switch valve is in the downshifted position…

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U0106 Jeep OBD Code Diagnostic Procedure

U0106 Jeep OBD Code Definition: LOST COMMUNICATION WITH GLOW PLUG CONTROL MODULE For a complete wiring diagram Refer to Section 8W When Monitored: Continuously while the system is active.   Set Condition:The ECM isn’t receiving a LIN bus message from the Glow Plug Control Module.   Possible Causes INTERMITTENT DTC (D509) LIN BUS CIRCUIT OPEN…

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P0268 Jeep OBD Code Diagnostic Procedure

P0268 Jeep OBD Code Definition FUEL INJECTOR 3 CIRCUIT HIGH For a complete wiring diagram Refer to Section 8W When Monitored: With the engine cranking or running.   Set Condition:The ECM detects a fault on a Fuel Injector Control circuit.   Possible Causes ENGINE CONTROL MODULE INTERMITTENT CONDITION FUEL INJECTOR CONTROL CIRCUIT SHORTED TO VOLTAGE…

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