Error code
OBD2 P0906
OBD2P0906
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Gate Select Position Circuit Low.
Severity
moderateCan drive, but shifting issues may occur.
Summary
P0906 indicates a low signal issue with the gate select position circuit in the transmission control system, which can affect gear selection and shift operation.
Symptoms
- Erratic shift patterns
- Harsh or delayed gear engagement
- Missing gears
Common Causes
- Misalignment of the GSP sensor after a repair
- Faulty gate select position (GSP) sensor due to corrosion or damage
Diagnosis
- Check the alignment of the GSP sensor using a scan tool
- Inspect and repair any damaged wiring or connectors in the circuit between the ECM/TCM and the GSP sensor
Fixes
- Adjust the misaligned GSP sensor
- Replace a faulty gate select position (GSP) sensor
FAQ
What should I do if my car is experiencing shifting issues with P0906?
Check the alignment of the GSP sensor and inspect for any damaged wiring or connectors in the circuit.
Can a faulty gate select position (GSP) sensor cause other transmission problems?
Yes, it can lead to erratic shift patterns, harsh shifting, and missing gears.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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