OBD Guide
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P001B

A Camshaft Profile Actuator A Control Circuit Low Bank 1

P001B is an OBD-II diagnostic trouble code meaning: A Camshaft Profile Actuator A Control Circuit Low Bank 1. Common causes: open or short circuit to ground in the camshaft actuator wiring, oxidation or damage to the cam profile change actuator connector. 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 is on
  • Reduced engine power, especially in mid and high speed ranges
  • Increased fuel consumption
  • Unstable engine operation at idle is possible
  • Limited accelerator pedal response

Causes

  • Open or short circuit to ground in the camshaft actuator wiring
  • Oxidation or damage to the cam profile change actuator connector
  • Internal failure of the electromagnetic actuator
  • Insufficient oil pressure affecting the operation of the actuator hydraulic drive
  • Engine ECU malfunction

How to Fix

  1. Read frozen frame codes and data to determine error conditions
  2. Check the camshaft control circuit fuse
  3. Measure the resistance of the actuator winding (the norm is usually 7–15 Ohms)
  4. Check the supply voltage and grounding of the actuator with the engine running
  5. Inspect the wiring from the ECU to the actuator for damage
  6. If the wiring is in good condition, replace the camshaft cam profile change actuator

Related codes

P001CP002EP000AP000BP0010

Error P001B by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P001B code mean?

P001B is an OBD-II diagnostic trouble code that indicates: A Camshaft Profile Actuator A Control Circuit Low Bank 1

What causes a P001B error code?

The most common causes of P001B include: Open or short circuit to ground in the camshaft actuator wiring; Oxidation or damage to the cam profile change actuator connector; Internal failure of the electromagnetic actuator; Insufficient oil pressure affecting the operation of the actuator hydraulic drive.

How do I fix a P001B diagnostic trouble code?

To fix P001B: Read frozen frame codes and data to determine error conditions. Check the camshaft control circuit fuse. Measure the resistance of the actuator winding (the norm is usually 7–15 Ohms). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P001B?

Do not drive — repair immediately

How much does it cost to fix P001B?

The estimated repair cost for P001B is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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