OBD Guide
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P03F5

B Camshaft Profile Actuator C Control Stuck On Bank 1

P03F5 is an OBD-II diagnostic trouble code meaning: B Camshaft Profile Actuator C Control Stuck On Bank 1. Common causes: oil passages clogged - shift mechanism cannot return, worn or scuffed cam profile switching mechanism. Estimated repair cost: $56–556.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–556 (est.)

Symptoms

  • Check Engine light on
  • Unstable idle (engine runs rough)
  • Increased fuel consumption in urban modes
  • Unusual engine sound when idling
  • Possible increased oil consumption

Causes

  • Oil passages clogged - shift mechanism cannot return
  • Worn or scuffed cam profile switching mechanism
  • Short circuit in control wire to power - solenoid is constantly activated
  • Insufficient oil pressure to return shift plunger
  • Thickened oil at low temperatures (temporary problem)

How to Fix

  1. Check the solenoid control circuit for short circuit for power (the wire should not be energized when the solenoid is turned off)
  2. Make sure the engine oil pressure and viscosity are normal
  3. Carry out an engine flush (oil flush) to clean the channels.
  4. Check the condition of the oil channels of the block head (with an endoscope)
  5. Replace actuator solenoid C if it does not close completely.
  6. Carry out diagnostics of the mechanical part of the cam profile switching system

Related codes

P03F1P03F2P0011P0014P0016

Error P03F5 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P03F5 code mean?

P03F5 is an OBD-II diagnostic trouble code that indicates: B Camshaft Profile Actuator C Control Stuck On Bank 1

What causes a P03F5 error code?

The most common causes of P03F5 include: Oil passages clogged - shift mechanism cannot return; Worn or scuffed cam profile switching mechanism; Short circuit in control wire to power - solenoid is constantly activated; Insufficient oil pressure to return shift plunger.

How do I fix a P03F5 diagnostic trouble code?

To fix P03F5: Check the solenoid control circuit for short circuit for power (the wire should not be energized when the solenoid is turned off). Make sure the engine oil pressure and viscosity are normal. Carry out an engine flush (oil flush) to clean the channels.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P03F5?

Do not drive — repair immediately

How much does it cost to fix P03F5?

The estimated repair cost for P03F5 is $56–556. Actual cost depends on your vehicle, location, and labor rates.

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