Error code
OBD2 P0921
OBD2P0921
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Gear Shift Forward Actuator Circuit Range/Performance.
Severity
moderateCan drive, but shifting issues may occur.
Summary
P0921 indicates an issue with the gear shift forward actuator circuit, which affects the automatic transmission's ability to properly engage gears.
Common Causes
- Poor wiring or connection
- Faulty gear shift forward actuator
- ECM/PCM/TCM malfunction
Fixes
FAQ
What does P0921 mean?
P0921 indicates a problem with the gear shift forward actuator circuit, which is part of your vehicle's automatic transmission system.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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- P0910Gate Select Actuator Circuit/Open
- P0911Gate Select Actuator Circuit Range/Performance