OBD Guide
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P03F1

B Camshaft Profile Actuator C Control Circuit/Open Bank 1

P03F1 is an OBD-II diagnostic trouble code meaning: B Camshaft Profile Actuator C Control Circuit/Open Bank 1. Common causes: actuator c solenoid control circuit open wire, faulty solenoid (winding break). Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light on
  • Loss of power at high speeds and acceleration
  • The engine runs in "economy" mode without switching the cam profile
  • Deterioration of dynamic acceleration characteristics
  • Change in engine sound when accelerating

Causes

  • Actuator C solenoid control circuit open wire
  • Faulty solenoid (winding break)
  • Damaged drive solenoid connector C
  • Oil contamination that has clogged the drive channels (mechanical cause)
  • ECU malfunction (extremely rare)

How to Fix

  1. Locate Bank 1 Camshaft B Actuator C Solenoid According to Engine Diagram
  2. Check the solenoid connector for damage and oxidation.
  3. Measure the resistance of the solenoid winding (usually 6-14 Ohms) - replace if broken
  4. Check the ECU control signal at the connector while the engine is running.
  5. Make sure that the pressure and quality of the engine oil are normal
  6. Replace the solenoid or repair the broken wiring, reset the codes

Related codes

P03F2P03F5P0011P0014P0021

Error P03F1 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P03F1 code mean?

P03F1 is an OBD-II diagnostic trouble code that indicates: B Camshaft Profile Actuator C Control Circuit/Open Bank 1

What causes a P03F1 error code?

The most common causes of P03F1 include: Actuator C solenoid control circuit open wire; Faulty solenoid (winding break); Damaged drive solenoid connector C; Oil contamination that has clogged the drive channels (mechanical cause).

How do I fix a P03F1 diagnostic trouble code?

To fix P03F1: Locate Bank 1 Camshaft B Actuator C Solenoid According to Engine Diagram. Check the solenoid connector for damage and oxidation.. Measure the resistance of the solenoid winding (usually 6-14 Ohms) - replace if broken. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P03F1?

Do not drive — repair immediately

How much does it cost to fix P03F1?

The estimated repair cost for P03F1 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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