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EmissionsSeverity Medium: diagnose soon

P0489Exhaust Gas Recirculation "A" Control Circuit Low

What it means

The EGR control circuit reads too low a voltage, usually a short to ground.

Symptoms

  • Rough idle or stalling
  • Loss of power, sometimes limp mode
  • Black smoke (diesel) or pinging under load (petrol)

Common causes

  • Control wire shorted to ground
  • Shorted actuator winding
  • ECU driver fault

What to check first

  1. Check the control wire for a short to ground
  2. Measure the actuator resistance
  3. Run the actuator test
Can I drive with P0489? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P0489: questions and answers

What does P0489 mean?

P0489: Exhaust Gas Recirculation "A" Control Circuit Low. The EGR control circuit reads too low a voltage, usually a short to ground.

What are the symptoms of P0489?

Rough idle or stalling. Loss of power, sometimes limp mode. Black smoke (diesel) or pinging under load (petrol).

What causes P0489?

Control wire shorted to ground. Shorted actuator winding. ECU driver fault.

How do you diagnose P0489?

1. Check the control wire for a short to ground 2. Measure the actuator resistance 3. Run the actuator test

Can I drive with P0489?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.