P0781

2017-10-10

Description:

  • The fault code P0781 indicates that there is a problem with the transmission 1-2 shift operation. This fault may cause a variety of transmission-related issues.

Possible Symptoms:

  • Harsh or delayed shifting

  • Transmission slipping or not engaging

  • Transmission overheating

  • Illuminated check engine light

  • Reduced fuel efficiency

  • Transmission stuck in one gear.

Possible Causes:

  • Low transmission fluid level

  • Dirty or contaminated transmission fluid

  • Malfunctioning shift solenoid A

  • Faulty transmission control module (TCM)

  • Malfunctioning valve body

  • Worn or damaged clutch plates

  • Broken or damaged transmission gears

Related Parts:

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

Possible Solutions:

  • Check and refill the transmission fluid to the proper level

  • Change the transmission fluid and filter

  • Replace the shift solenoid A

  • Replace the transmission control module (TCM)

  • Repair or replace the valve body

  • Replace the worn or damaged clutch plates

  • Repair or replace the broken or damaged transmission gears

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