P0862
PowertrainModule Communicationhigh severityGear Shift Module Communication Circuit High
What P0862 Means
The signal voltage on the gear shift module communication circuit is higher than expected. This usually indicates a short to voltage or an open circuit.
Symptoms
- Incorrect gear position readout
- Transmission may not shift properly
- Warning light illuminated
Common Causes
- Short to voltage in communication wiring
- Open circuit in wiring or connector
- Faulty gear shift module
- Failed transmission control module
Diagnostic Steps
- Scan for stored and related codes
- Inspect wiring for shorts to power or opens
- Measure circuit voltage against specification
- Repair wiring or replace gear shift module if defective
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