P0766

2017-10-10

Description:

  • The fault code P0766 indicates that there is an issue with the performance of or that shift solenoid 'D' is stuck in the off position. This can cause issues with the transmission shifting or may prevent the vehicle from moving at all.

Possible Symptoms:

  • Delayed or harsh shifting

  • Transmission slipping

  • Inability to shift gears

  • Illuminated check engine light

  • Reduced engine power or acceleration

Possible Causes:

  • Defective shift solenoid 'D'

  • Obstructed or dirty transmission fluid passages

  • Faulty wiring or connections in the circuit

  • Failed transmission control module (TCM)

Related Parts:

  • Transmission Shift Sensor: Gear Shift Sensor communicates the position the gear shifted to. Problems lead to difficulty in shifting gears

Possible Solutions:

  • Replace the shift solenoid 'D'

  • Flush the transmission fluid and clean any obstructions or debris

  • Check and repair any damaged wiring or connections

  • Replace the transmission control module (TCM) if necessary

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