Symptoms of P0781 OBD II Trouble Code
- Check engine light illuminated (Malfunction Indicator Lamp / MIL)
- Vehicle will not shift from 1st to 2nd gear
Common Causes of P0781 OBD II Trouble Code
- 1-2 shift solenoid failure
- Electrical short to power – pinched wires
- Electrical short to ground – pinched wires
- Open in power or ground circuit wiring – disconnected or loose connections
- TCM or PCM internal failure