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Service bulletins for the 2020 Ram 1500

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.

1228 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

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Only bulletins with component: High-voltage battery are shown. Show all

Bulletins, newest first
08031242024-03-18. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ELECTRICAL SYSTEM. Battery Pack Control Module (BPCM) Software Update Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTC)s have been set: ? P0AC0 - Hybrid Battery Pack Current Sensor 1 Circuit Performance. ? P1A29 - Cell Supervisory Circuit A Failure. ? P0DE7 - Hybrid/EV Battery Pack Cell Voltage High. ? P0ABA - Voltage Sense A Circuit. ? P0B3D - Hybrid Battery Voltage Sense "A" Circuit Low. ? P0B3E - Hybrid Battery Voltage Sense "A" Circuit High. ? U3017 - Control Module Timer/Clock Performance. ? P0E55 - DC/DC Converter Current Sensor Circuit "A". ? P0DAF - Hybrid/EV Battery Cell Balancing Circuit "A". ? P0AD4 - Hybrid Battery Pack Air Flow System Insufficient Air Flow. This bulletin involves updating the BPCM with the latest available software.
9004376-12023-01-17. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:PUMP. PUMP, Vacuum Prior to replacing the vacuum pumps, please contact or email FCA Redacted Content. If no response in 15 minutes, proceed with repair.
9004376RevA2022-10-17. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:PUMP. PUMP, Vacuum Prior to replacing the vacuum pumps, please contact or email FCA Redacted Content. If no response in 15 minutes, proceed with repair.

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