OBD Guide
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P0025

BCamshaft Position - Timing Over-Retarded (Bank 2)

P0025 is an OBD-II diagnostic trouble code meaning: BCamshaft Position - Timing Over-Retarded (Bank 2). Common causes: contaminated or old engine oil, malfunction of vvt clutch (phase shifter). Estimated repair cost: $33–500.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–500 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Unstable operation at idle
  • Difficulty starting the engine
  • Check Engine Light Is On
  • Engine detonation under load
  • Reduced acceleration dynamics

Causes

  • Contaminated or old engine oil
  • Malfunction of VVT clutch (phase shifter)
  • Clogged oil channels of the VVT system
  • VVT control solenoid malfunction
  • Worn timing chain or belt
  • Camshaft position sensor malfunction
  • Low oil pressure in the system
  • Engine control unit malfunction

How to Fix

  1. Check the level and condition of the engine oil, replace if necessary
  2. Read the data with a scanner and check the operation of the camshaft sensors
  3. Check VVT solenoid operation using a multimeter
  4. Inspect and check the condition of the timing chain/belt
  5. Clean the oil passages of the VVT system with flushing fluid
  6. Check the oil pressure in the system with a pressure gauge
  7. Replace VVT clutch or solenoid if necessary
  8. Clear error codes and test drive to see if the problem is resolved

Related codes

P0020P0021P0022P0024P0011P0014P0016P0017

Error P0025 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0025 code mean?

P0025 is an OBD-II diagnostic trouble code that indicates: BCamshaft Position - Timing Over-Retarded (Bank 2)

What causes a P0025 error code?

The most common causes of P0025 include: Contaminated or old engine oil; Malfunction of VVT clutch (phase shifter); Clogged oil channels of the VVT system; VVT control solenoid malfunction.

How do I fix a P0025 diagnostic trouble code?

To fix P0025: Check the level and condition of the engine oil, replace if necessary. Read the data with a scanner and check the operation of the camshaft sensors. Check VVT solenoid operation using a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0025?

Limited driving only, diagnose soon

How much does it cost to fix P0025?

The estimated repair cost for P0025 is $33–500. Actual cost depends on your vehicle, location, and labor rates.

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