OBD Guide
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P0029

Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2

P0029 is an OBD-II diagnostic trouble code meaning: Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2. Common causes: faulty exhaust valve control solenoid, open or short circuit in solenoid wiring. Estimated repair cost: $33–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–278 (est.)

Symptoms

  • Unstable engine idling
  • Reduced power and acceleration dynamics
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Difficulty starting the engine
  • Rough engine operation when accelerating

Causes

  • Faulty exhaust valve control solenoid
  • Open or short circuit in solenoid wiring
  • Contamination of oil channels of the VVT system
  • Low engine oil pressure
  • Using poor quality or contaminated oil
  • Engine control module (ECM) malfunction
  • Mechanical damage to the VVT drive

How to Fix

  1. Connect a diagnostic scanner and read all error codes
  2. Check the level and quality of the engine oil, replace if necessary
  3. Visually inspect the solenoid wiring for damage.
  4. Measure the solenoid resistance with a multimeter (should be within specification)
  5. Check the supply voltage at the solenoid connector with the engine running.
  6. Remove and clean the solenoid from dirt and deposits
  7. Check solenoid operation using diagnostic equipment
  8. If necessary, replace the faulty solenoid
  9. Clear error codes and test drive to see if the problem is resolved

Related codes

P0028P0030P0031P0020P0021P0011P0014

Error P0029 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0029 code mean?

P0029 is an OBD-II diagnostic trouble code that indicates: Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2

What causes a P0029 error code?

The most common causes of P0029 include: Faulty exhaust valve control solenoid; Open or short circuit in solenoid wiring; Contamination of oil channels of the VVT system; Low engine oil pressure.

How do I fix a P0029 diagnostic trouble code?

To fix P0029: Connect a diagnostic scanner and read all error codes. Check the level and quality of the engine oil, replace if necessary. Visually inspect the solenoid wiring for damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0029?

Limited driving only, diagnose soon

How much does it cost to fix P0029?

The estimated repair cost for P0029 is $33–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat