# P1C01 on the 2021 Jeep Wrangler

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.

## Bulletins for this model year that name P1C01

- [11028230](https://open.wenmarpro.com/bulletins/11028230), 2026-02-04: Flash: Battery Pack Control Module \(BPCM\) Updates \*\*Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\):\*\* ● \*\*P0B28\-00 \- Hybrid/EV Battery “B” Voltage Unstable. ● P0BBE\-00 \- Hybrid/EV Battery Pack Voltage Variation. ● P0AA1 \- Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0C78 \- Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6 \- Hybrid/EV Battery Charging Current High. ● P0B24 \- Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E \- Hybrid/EV Battery State Of Health Failed.\*\* ● P1A21\-00 \- HV Battery Contactor Control Sequence Incorrect. ● P0B3E\-00 \- Hybrid/EV Battery Voltage Sense 1 Circuit High. ● P0607\-00 \- ECU Internal Performance. ● P1E1B\-00 \- Hybrid/EV Battery Side Voltage System Isolation. ● P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. ● P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. ● P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. ● P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. ● P167B\-00 \- Controlled System Shutdown. ● U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. ● P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. ● U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. ● P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. ● P1A0C\-00 \- Battery Energy Control Module System Voltage Low. J08 FSAR\-TSB\-6892 \-2\- \*\*Customers may also comment on the following: ● Vehicle does not start. NOTE: The no start condition is accompanied with the following DTCs: P0DAB\-00, P0607\-00, P0AA1, P0AA4, P0C78, P0CA6, P0B24 and/or P1C5E. P0B28 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.\*\* This bulletin involves reprogramming the BPCM with the latest available software. NOTE: Additional module flashes are requ
- [10248015](https://open.wenmarpro.com/bulletins/10248015), 2024-01-02: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: ? P1A21\-00 \- HV Battery Contactor Control Sequence Incorrect. ? P0B3E\-00 \- Hybrid/EV Battery Voltage Sense 1 Circuit High. ? P0607\-00 \- ECU Internal Performance. ? P1E1B\-00 \- Hybrid/EV Battery Side Voltage System Isolation. ? P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. ? P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. ? P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. ? P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. ? P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. ? P167B\-00 \- Controlled System Shutdown. ? U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. ? P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. ? U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. ? P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. ? P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This bulletin involves updating the BPCM with the latest available software. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update: ? Powertrain Control Module \(PCM\). ? Integrated Dual Charging Module \(IDCM\). ? Transmission Control Module \(TCM\). ? Battery Pack Control Module \(BPCM\). ? Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Inverter Module \(PIM\).
- [10234488](https://open.wenmarpro.com/bulletins/10234488), 2023-04-17: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: ? P1A21\-00 \- HV Battery Contactor Control Sequence Incorrect. ? P0B3E\-00 \- Hybrid/EV Battery Voltage Sense 1 Circuit High. ? P0607\-00 \- ECU Internal Performance. ? P1E1B\-00 \- Hybrid/EV Battery Side Voltage System Isolation. ? P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. ? P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. ? P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. ? P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. ? P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. ? P167B\-00 \- Controlled System Shutdown. ? U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. ? P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. ? U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. ? P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. ? P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This bulletin involves updating the BPCM with the latest available software. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update: ? Powertrain Control Module \(PCM\). ? Integrated Dual Charging Module \(IDCM\). ? Transmission Control Module \(TCM\). ? Battery Pack Control Module \(BPCM\). ? Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Inverter Module \(PIM\).
- [10229533](https://open.wenmarpro.com/bulletins/10229533), 2023-01-09: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1A21\-00 \- HV Battery Contactor Control Sequence Incorrect. P0B3E\-00 \- Hybrid/EV Battery Voltage Sense 1 Circuit High. P0607\-00 \- ECU Internal Performance. P1E1B\-00 \- Hybrid/EV Battery Side Voltage System Isolation. P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Inverter Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).
- [10225385](https://open.wenmarpro.com/bulletins/10225385), 2022-10-31: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1A21\-00 \- HV Battery Contactor Control Sequence Incorrect. P0B3E\-00 \- Hybrid/EV Battery Voltage Sense 1 Circuit High. P0607\-00 \- ECU Internal Performance. P1E1B\-00 \- Hybrid/EV Battery Side Voltage System Isolation. P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Inverter Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).
- [10225248](https://open.wenmarpro.com/bulletins/10225248), 2022-10-31: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1A21\-00 \- HV Battery Contactor Control Sequence Incorrect. P0B3E\-00 \- Hybrid/EV Battery Voltage Sense 1 Circuit High. P0607\-00 \- ECU Internal Performance. P1E1B\-00 \- Hybrid/EV Battery Side Voltage System Isolation. P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Inverter Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).
- [10223184](https://open.wenmarpro.com/bulletins/10223184), 2022-10-17: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This software enhancement will improve PHEV battery performance and diagnostics. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Invertor Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).
- [10220802](https://open.wenmarpro.com/bulletins/10220802), 2022-09-26: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This software enhancement will improve PHEV battery performance and diagnostics. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Invertor Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).
- [10214608](https://open.wenmarpro.com/bulletins/10214608), 2022-06-27: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This software enhancement will improve PHEV battery performance and diagnostics. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Invertor Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).
- [10212405](https://open.wenmarpro.com/bulletins/10212405), 2022-05-31: Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This software enhancement will improve PHEV battery performance and diagnostics. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Invertor Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).