P031F

2017-10-10

Description:

  • Ignition D Control Signal Circuit High

Possible Symptoms:

  • Check the wiring and connectors related to the ignition D control signal circuit for any damage or loose connections.

  • Check the ignition module or ignition coil for any malfunction or defects and replace if necessary.

  • Inspect the ignition switch for any faulty contacts or connections and repair or replace as needed.

  • Verify the operation of the engine control module (ECM) or powertrain control module (PCM) and update or reprogram if required.

  • If all other solutions fail, consider replacing the ECM or PCM as a last resort.

Possible Causes:

  • faulty ignition coil

  • damaged or worn out spark plugs

  • malfunctioning ignition control module

  • issues with the ignition switch

  • faulty engine control unit (ECU)

Related Parts:

Possible Solutions:

  • Engine misfires or runs rough

  • Decreased fuel efficiency or poor fuel mileage

  • Trouble starting the vehicle or starting issues

  • Engine stalling or cutting out while driving

  • Loss of power or decreased acceleration

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