P1626 on the 2024 Jeep Wagoneer S
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 08-312-26 | 2026-08-13. Service bulletin. Powertrain Modules Software Update Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P1626-00 - Park Pawl Motor Stuck. NOTE: If DTCs P1E25-00, P1625-00 or P1626-00 are active, the vehicle will stay in READY mode since the Electric Vehicle Control Unit (EVCU) is not able to confirm if the park pawl is engaged, and the vehicle will be secured. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. Customers may also comment on one or more of the following: ● Vehicle is not shutting off and draining the 12V battery. ● Unable to start the vehicle. |
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| 08-078-25 REV. C | 2025-12-23. Service bulletin. RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown This bulletin involves reprogramming the IDCM, BPCM, MCP A, MCP B and the EVCU with the latest available software and then, if needed, performing a Wheel End Disconnect Position Learn routin |
| 08-077-25 REV. D | 2025-12-23. Service bulletin. RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor B (MCP B) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown. This bulletin involves reprogramming the IDCM, BPCM, MCP A, MCP B and the EVCU with the latest available software and then, if needed, performing a Wheel End Disconnect Position Learn routine |
| 08-013-25 REV. E | 2025-12-23. Service bulletin. Flash: Motor Control Processor B (MCP B) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown This bulletin involves reprogramming the IDCM, BPCM, MCP A, MCP B and the EVCU with the latest available software and then, if needed, performing a Wheel End Disconnect Position Learn routine |
| 08-010-25 REV. E | 2025-12-23. Service bulletin. Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown. This bulletin involves reprogramming the BPCM, MCP A, MCP B and the EVCU with the latest available software and then performing a Wheel End Disconnect Position Learn routine |
| 08-078-25 REV. B | 2025-07-17. Service bulletin. RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor A (MCP A) Updates 11A2 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown |
| 08-077-25 REV. C | 2025-07-17. Service bulletin. RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor B (MCP B) Updates 11A2 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown This bulletin involves reprogramming the IDCM, BPCM, MCP A, MCP B and the EVCU with the latest available software and then, if needed, performing a Wheel End Disconnect Position Learn routine. |
| 08-013-25 REV. D | 2025-07-17. Service bulletin. Flash: Motor Control Processor B (MCP B) Updates 11A2 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown. This bulletin involves reprogramming the IDCM, BPCM, MCP A, MCP B and the EVCU with the latest available software and then, if needed, performing a Wheel End Disconnect Position Learn routine |
| 08-010-25 REV. D | 2025-07-17. Service bulletin. Flash: Motor Control Processor A (MCP A) Updates 11A2 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown This bulletin involves reprogramming the BPCM, MCP A, MCP B and the EVCU with the latest available software and then performing a Wheel End Disconnect Position Learn routine |
| 08-010-25 REV. C | 2025-05-07. Service bulletin. "Flash: Motor Control Processor A (MCP A) Updates 11A1 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement: ● Software enhancement to prevent erroneous fault identification resulting in inverter shutdown. This bulletin involves reprogramming the BPCM, MCP A, MCP B and the EVCU with the latest available software and then performing a Wheel End Disconnect Position Learn routine" |
24 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.