Error code

OBD2 P0489

OBD2P0489
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Exhaust Gas Recirculation Control Circuit Low.

Severity

moderateCan be driven, but performance issues may occur.

Summary

P0489 indicates an issue with the Exhaust Gas Recirculation (EGR) system's control circuit being too low in voltage. This affects how the EGR valve operates.

Symptoms

  • Check engine light may illuminate
  • Engine performance issues

Common Causes

  • Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors in the EGR valve’s control system
  • Defective EGR valve control solenoid
  • Excessive carbon build-up preventing free movement of the EGR valve pintle

Diagnosis

  1. Inspect and test wiring and connectors in the EGR system for damage or corrosion.
  2. Check for excessive carbon build-up on the EGR valve that could prevent it from moving freely.
  3. Test the EGR valve control solenoid to ensure proper operation.

Fixes

  • Replace damaged wiring and connectors in the EGR system
  • Clean or replace the EGR valve if carbon build-up is preventing it from moving properly

FAQ

What does P0489 mean?

P0489 indicates a low voltage issue in the Exhaust Gas Recirculation (EGR) system's control circuit.

How serious is P0489?

Moderately serious. It can affect engine performance but does not typically prevent driving.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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