Error code
OBD2 P0956
OBD2P0956
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Auto Shift Manual Mode Circuit Range/Performance.
Severity
moderateCan drive but may experience shifting issues.
Summary
P0956 indicates an issue with the Auto Shift Manual (ASM) mode circuit's range or performance, typically related to wiring or the transmission control module in automatic transmissions.
Common Causes
- Poor connection or damaged wiring
- Faulty ECM/PCM/TCM
Fixes
FAQ
What does P0956 mean?
P0956 indicates a problem with the Auto Shift Manual (ASM) mode circuit's range or performance, often related to wiring issues or malfunctioning control modules.
How do I fix P0956?
Fixes may involve repairing or replacing faulty wiring and checking or replacing the ECM/PCM/TCM. Professional diagnosis is recommended.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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