OBD Guide
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P0489

EGR A Control Circuit Low

P0489 is an OBD-II diagnostic trouble code meaning: EGR A Control Circuit Low. Common causes: egr valve control circuit wire break, poor contact in the egr valve connector. Estimated repair cost: $22–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Engine detonation under load
  • Increased fuel consumption
  • Reduced power and traction
  • Unstable operation at idle
  • Increased NOx emissions
  • Possible overheating if EGR is not working for a long time

Causes

  • EGR valve control circuit wire break
  • Poor contact in the EGR valve connector
  • Burnt or broken wire near the exhaust manifold (high temperature)
  • Faulty EGR valve solenoid A (resistance too high or open)
  • Malfunction of the ECU output stage (rare)
  • Poor ECU grounding

How to Fix

  1. Visually inspect the EGR valve connector and wiring harness for damage from high temperatures.
  2. Measure the resistance of the EGR valve solenoid between the connector contacts (check with the standard in the documentation - usually 20–30 Ohms)
  3. Check the supply voltage at the valve connector with the ignition on
  4. Check the control wire from the computer to the valve for open circuit
  5. Inspect the integrity of the wiring in the exhaust manifold area - the insulation often melts
  6. Replace the EGR valve if its solenoid breaks
  7. Restore wiring if a break is detected
  8. Reset codes and take a test drive

Related codes

P0400P0401P0402P0403P0404P0405P0406P0490

Error P0489 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0489 code mean?

P0489 is an OBD-II diagnostic trouble code that indicates: EGR A Control Circuit Low

What causes a P0489 error code?

The most common causes of P0489 include: EGR valve control circuit wire break; Poor contact in the EGR valve connector; Burnt or broken wire near the exhaust manifold (high temperature); Faulty EGR valve solenoid A (resistance too high or open).

How do I fix a P0489 diagnostic trouble code?

To fix P0489: Visually inspect the EGR valve connector and wiring harness for damage from high temperatures.. Measure the resistance of the EGR valve solenoid between the connector contacts (check with the standard in the documentation - usually 20–30 Ohms). Check the supply voltage at the valve connector with the ignition on. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0489?

Do not drive — repair immediately

How much does it cost to fix P0489?

The estimated repair cost for P0489 is $22–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat