TorqueMech OBD Code Guide
P0778 - Pressure Control Solenoid B Electrical
The transmission detected an electrical fault in pressure control solenoid B.
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Read code pattern
Check likely system
Estimate after confirmation
Code Overview
The transmission detected an electrical fault in pressure control solenoid B.
Common Causes
- Transmission sensor, solenoid, or switch fault
- Damaged wiring or connector
- Internal transmission or control-module issue
Diagnostic Steps
- Check transmission fluid condition and supporting codes
- Inspect the related connector and harness
- Compare commanded operation to live scan data if supported
Related OBD Codes
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Next Steps
Move from code to checks, then estimate.