P0912
PowertrainTransmission Shifthigh severityGate Select Position Circuit Low
What P0912 Means
The gate select position circuit voltage is reading lower than normal. This usually points to a short to ground or sensor failure in the shift-by-wire system.
Symptoms
- No or erratic shifting
- Transmission fault light
- Limp mode
Common Causes
- Short to ground in wiring
- Faulty gate select position sensor
- Corroded connector pins
- Failed transmission control module
Diagnostic Steps
- Retrieve and record trouble codes
- Check gate select sensor signal wire for short to ground
- Backprobe sensor voltage at connector
- Replace sensor if out of spec
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