P0731 OBD II Trouble Code Gear 1 Incorrect Ratio DTC

Symptoms of P0731 OBD II Trouble Code

  • Check Engine Light illuminated (Malfunction indicator lamp)
  • Not starting in 1st gear, sluggish acceleration
  • Transmission slipping
  • Loss of fuel economy

Common Causes of P0731 OBD II Trouble Code

  • Low or dirty transmission fluid
  • Mechanical failure inside transmission
  • Internal blockage inside transmission main control
  • Faulty Shift solenoid
  • Faulty transmission control module