OBD Guide
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P11AC

Camshaft Adjustment Actuator 'B' Cylinder 3

P11AC is an OBD-II diagnostic trouble code meaning: Camshaft Adjustment Actuator 'B' Cylinder 3. Common causes: vvt solenoid valve malfunction, vvt mechanism is dirty or jammed. Estimated repair cost: $28–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable idling
  • Popping sounds in the exhaust system

Causes

  • VVT solenoid valve malfunction
  • VVT mechanism is dirty or jammed
  • Problems with wiring to the actuator
  • Low oil level or dirty
  • Camshaft position sensor malfunction

How to Fix

  1. Check the level and condition of the engine oil
  2. Diagnose VVT solenoid valve
  3. Check the integrity of wiring and connectors
  4. Clean or replace VVT mechanism
  5. If necessary, replace the camshaft position sensor

Related codes

P11ABP11ADP0013

FAQ

What does the P11AC code mean?

P11AC is an OBD-II diagnostic trouble code that indicates: Camshaft Adjustment Actuator 'B' Cylinder 3

What causes a P11AC error code?

The most common causes of P11AC include: VVT solenoid valve malfunction; VVT mechanism is dirty or jammed; Problems with wiring to the actuator; Low oil level or dirty.

How do I fix a P11AC diagnostic trouble code?

To fix P11AC: Check the level and condition of the engine oil. Diagnose VVT solenoid valve. Check the integrity of wiring and connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P11AC?

Yes, but get it checked soon

How much does it cost to fix P11AC?

The estimated repair cost for P11AC is $28–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat