# Service bulletin 08\-253\-24

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11011916
- Published by NHTSA: 2024\-12\-18
- Manufacturer's number: 08\-253\-24
- Manufacturer's date: 2024\-12\-13
- NHTSA component: ELECTRICAL SYSTEM
- Manufacturer's system: Hybrid Control Processor, Auxiliary Hybrid Control Processor \(HCP/AHCP\)

## NHTSA's summary

"Flash: Hybrid Control Processor \(HCP\) and Auxiliary Hybrid Control Processor \(AHCP\) 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 \(DTCs\): ● \*\*P0A78 \- Drive Motor A Inverter Performance. ● P0A79 \- Drive Motor B Inverter Performance.\*\* ● P0A33 \- Drive Motor B Temperature Sensor 1 Circuit High. ● P0A2D \- Sensor Power Supply 1 Circuit High ● P215B \- Vehicle Speed Output Shaft Speed Correlation. ● P0C4A \- Drive Motor A Inverter Over Temperature. ● P0E15 \- Hybrid\-Ev Battery Pack Coolant Heater A Control Performance. ● P1AFE \- MCPB Improper Shut Down. ● P1AF8 \- MCPA Control Module Shutdown Performance. ● P0513 \- Invalid Skim Key. ● U151A\-87 \- Hybrid Control Processor Secret Code\-Missing Message. Customers may also experience one or more of the following: ● \*\*Message on Instrument Cluster stating: ""Vehicle shutting down in two minutes"".\*\* ● The scheduled charging does not occur on desired schedule. ● Vehicle does not start when pushing ignition switch with no MIL for DTCs P1AFE and P1AF8 \(pending DTCs\). ● Vehicle does not start when pushing ignition switch with DTCs P0513 and U151\-A87 \(stored or active\). ● Scheduled charging start/end does not align with displayed time \(ex: 12:05 pm end time on radio, but charging ends at 12:06 pm\). ● Scheduled charging does not start following a power outage. ● Scheduled Cabin Conditioning \(SCC\) feature will not function properly if they schedule the departure time in between 50 minutes to 480 minutes at extreme cold ambient temps below \-24°C \(\-11 °F\). ● “Charge Now” soft button does not always work. ● The vehicle will get a rough engine spin\-down, and then “Service Charging System” warning and shutdown if the vehicle is quickly re\-cranked after the initial key crank. ● Unable to pass a smog check for certain states that require no DTCs present \(stored or active\). ● Vehicle shutdown \(MIL set\) if the acceleration pedal is 100% and the vehicle is on ice. ● Vehicle may not have a successful second remote start if customer happens to request it immediately after first remote start without letting the vehicle sleep while at low High Voltage \(HV\) battery State of Charge \(SOC\). ● Vehicle may not achieve propulsion through a cold key crank if the HV battery was not conditioned using thermal periodic wake\-up feature at critical cold temperatures around \-33 °C \(\-27 °F\) even if the vehicle was left plugged into a charger for an extended period of time. In addition, the following software enhancement is available: ● Corrections to allow the vehicle to clear the permanent fault codes. This bulletin involves reprogramming the HCP/AHCP, also known as Power Inverter Module \(PIM\), with the latest available software."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11011916-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11011916-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Trouble codes named

P0513, P0A2D, P0A33, P0A78, P0A79, P0C4A, P0E15, P1AF8, P1AFE, P215B, U151A

## Vehicles listed

- 2021 CHRYSLER PACIFICA PLUG\-IN HYBRID

## Recalls for the same vehicles and component

- [26V362000](/recalls/nhtsa/26V362000.md), 2026-06-04: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [2023008](/recalls/tc/2023008.md), 2023-01-18: Electrical
- [23V010000](/recalls/nhtsa/23V010000.md), 2023-01-17: ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; HYBRID PROPULSION SYSTEM: INVERTER

## Other bulletins for the same vehicles and component

- [S2621000006](/bulletins/11038331.md), 2026-10-07, Service bulletin: ELECTRICAL SYSTEM. Note: Document released 10/2/2026. Multiple Warning Indicators On In The IPC. ESM \- PRNDL Flashing. And The Vehicle Will Not Shift Into Gear. The Wipers May Be On, With An Electric Parking Brake Unavailable.
- [9100900](/bulletins/11037346.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [9100860](/bulletins/11035068.md), 2026-07-18, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000046](/bulletins/11034388.md), 2026-07-02, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Calibration Requirements For The Power Sliding Door Module \(PSDM\).
- [S2623000041 REV.A](/bulletins/11034351.md), 2026-07-02, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Power Liftgate Intermittently Inoperative. Will Not Open/ Close. Liftgate/Hatch Ajar Message Displayed. Rev A
- [S268A000014](/bulletins/11034346.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM. Radio/ETM is Adding Approximately 27mA Draw to Vehicle When in Logistics Mode
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9100835](/bulletins/11033957.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000040](/bulletins/11033896.md), 2026-06-16, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.
- [S2623000041](/bulletins/11033895.md), 2026-06-16, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Power Liftgate Intermittently Inoperative. Will Not Open/ Close. Liftgate/Hatch Ajar Message Displayed.

JSON: [/v1/bulletins/11011916](/v1/bulletins/11011916)

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