RAM 1500 2021 — technical service bulletin
Bulletin 0810921 · NHTSA communication 10221658 · issued Jul 1, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021
model years
1
vehicle entries
Official summary
3.6L Check Engine Light and Rough Running Engine This bulletin involves cutting off a wiring harness eyelet and splicing in a pigtail to the engine ground harness. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1050 - Intake Valve Control Solenoid 1 Circuit/Open. P1053 - Intake Valve Control Solenoid 2 Circuit/Open. P1056 - Intake Valve Control Solenoid 3 Circuit/Open. P1059 - Intake Valve Control Solenoid 4 Circuit/Open. P0010 - Bank 1 Cams
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.