Service bulletins for the 2022 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.
858 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: High-voltage battery are shown. Show all
| 0816622 | 2022-10-31. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:SENSOR/THERMOSTAT; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU):SOFTWARE. Flash: Hybrid Control Processor (HCP) Updates This bulletin involves updating the HCP with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) and/or Battery Charge Warning Light illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC). P0563-00 - System Voltage High. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.