OBD Guide
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P11A9

Camshaft Adjustment Actuator 'A' Cylinder 3

P11A9 is an OBD-II diagnostic trouble code meaning: Camshaft Adjustment Actuator 'A' Cylinder 3. Common causes: vvt solenoid valve malfunction, dirty or clogged oil passages. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Unstable operation at idle
  • Check Engine light comes on
  • Deterioration in acceleration dynamics

Causes

  • VVT solenoid valve malfunction
  • Dirty or clogged oil passages
  • Mechanical damage to the VVT mechanism
  • Problems with wiring or contacts
  • Poor quality or contamination of engine oil

How to Fix

  1. Check the condition and level of the engine oil
  2. Diagnose the operation of the VVT solenoid valve
  3. Check the integrity of wiring and contacts
  4. Clean or replace VVT mechanism if necessary
  5. In case of serious damage, replace the VVT mechanism

Related codes

P11A8P11AAP0010

FAQ

What does the P11A9 code mean?

P11A9 is an OBD-II diagnostic trouble code that indicates: Camshaft Adjustment Actuator 'A' Cylinder 3

What causes a P11A9 error code?

The most common causes of P11A9 include: VVT solenoid valve malfunction; Dirty or clogged oil passages; Mechanical damage to the VVT mechanism; Problems with wiring or contacts.

How do I fix a P11A9 diagnostic trouble code?

To fix P11A9: Check the condition and level of the engine oil. Diagnose the operation of the VVT solenoid valve. Check the integrity of wiring and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P11A9?

Yes, but get it checked soon

How much does it cost to fix P11A9?

The estimated repair cost for P11A9 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat