P0954
PowertrainTransmission Shiftmoderate severityAuto Shift Manual Control Circuit Intermittent
What P0954 Means
The automatic shift manual control circuit is showing intermittent signal faults. The problem comes and goes, often due to loose or corroded connections.
Symptoms
- Manual shift works intermittently
- Occasional transmission warning light
- Sporadic delayed gear changes
Common Causes
- Loose or corroded connectors
- Chafed or intermittent wiring
- Faulty shift selector switch
- Failed transmission control module
Diagnostic Steps
- Scan for intermittent codes and freeze frame data
- Wiggle test wiring while monitoring signal
- Inspect connectors for corrosion
- Test switch operation repeatedly
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