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Service bulletins for the 2018 Chrysler Pacifica

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.

491 on file from NHTSA, as of 2026-10-19.

About P1A29 on the 2018 Chrysler Pacifica: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P1A29 are shown. Show all

Bulletins, newest first
08-130-212022-08-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; BACK OVER PREVENTION; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT. 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 Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0AA1-00 - Hybrid/EV Battery Positive Contactor ?A? Stuck Closed. P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. P0B3C-00 - Hybrid/EV Battery Voltage Sense 1 Circuit Performance. P0B41-00 - Hybrid/EV Battery Voltage Sense 2 Circuit Performance. P0B46-00 - Hybrid/EV Battery Voltage Sense 3 Circuit Performance. P0B4B-00 - Hybrid/EV Battery Voltage Sense 4 Circuit Performance. P0B50-00 - Hybrid/EV Battery Voltage Sense 5 Circuit Performance. P0B55-00 - Hybrid/EV Battery Voltage Sense 6 Circuit Performance. P1A16-00 - Hybrid/EV Wakeup Control 3 Output Circuit/Open. P1D7B-00 - Hybrid/EV Wakeup Control 3 Output Circuit Short to Battery. P1D7C-00 - Hybrid/EV Wakeup Control 3 Output Circuit Short to Ground. P1A29 - Cell Supervisory Circuit A Failure. P1A2A - Cell Supervisory Circuit B Failure. P1D3E - Internal Control Module Shut Off Test Error. U0594 - Implausible Data Received from HCP. P2BE5 - Hybrid/EV Battery Pack Current Sensor "C" Circuit Performance. B12B0-85 - Charge Temperature Indicator-Signal Above Allowable Range. Customer may also experience one or more of the following: Premature oil change message displayed on the cluster and vehicle may be running in fuel/oil refresh mode. Scheduled charging not functioning properly because the battery pack did not wake up while plugged in.
08-047-202020-05-26. Service bulletin. ELECTRICAL SYSTEM. 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 Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may one or more of the following Diagnostic Trouble Codes (DTCs) have been set:P1A29 - Cell Supervisory Circuit A Failure. P1A2A - Cell Supervisory Circuit B Failure. P1D3E - Internal Control Module Shut Off Test Error. U0594 - Implausible Data Received from HCP. P2BE5 - Hybrid/EV Battery Pack Current Sensor "C" Circuit Performance. B12B0-85 - Charge Temperature Indicator-Signal Above Allowable Range.
S20080000192020-05-26. Service bulletin. ENGINE AND ENGINE COOLING. No Start, No Crank, Mil Lamp ON, DTC?s P1A2A-00, P1A29-00 Cell Supervisory Circuits
S20080000192020-05-18. Service bulletin. ELECTRICAL SYSTEM. No Start, No Crank, Mil Lamp ON, DTC?s P1A2A-00, P1A29-00 Cell Supervisory Circuits
S20080000192020-04-27. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ELECTRICAL SYSTEM. No Start, No Crank, Mil Lamp ON, DTC?s P1A2A-00, P1A29-00 Cell Supervisory Circuits

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.