P0781 OBD II Trouble Code 1-2 Shift Malfunction DTC

Detailed troubleshooting and repair information a P0781 DTC automatic transmission 1-2 shift malfunction code.

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