P0266
Cylinder 2 Contribution/Balance
P0266 is an OBD-II diagnostic trouble code meaning: Cylinder 2 Contribution/Balance. Common causes: spark plug fault, problems with the fuel injector. Estimated repair cost: $22–167.
Symptoms
- Uneven engine operation (triple)
- Increased fuel consumption
- Reduced engine power
- Vibrations at idle
Causes
- Spark plug fault
- Problems with the fuel injector
- Low cylinder compression
- Damage to piston rings
- Ignition coil defect
- Fuel system contamination
- Valve mechanism problems
How to Fix
- Check the condition of the spark plug in cylinder 2
- Test the operation of the fuel injector
- Measure the compression in the cylinder
- Check the ignition coil
- Analyze the operation of the VVT system
- Diagnose the condition of the piston group
Related codes
Error P0266 by Vehicle Brand
FAQ
What does the P0266 code mean?
P0266 is an OBD-II diagnostic trouble code that indicates: Cylinder 2 Contribution/Balance
What causes a P0266 error code?
The most common causes of P0266 include: Spark plug fault; Problems with the fuel injector; Low cylinder compression; Damage to piston rings.
How do I fix a P0266 diagnostic trouble code?
To fix P0266: Check the condition of the spark plug in cylinder 2. Test the operation of the fuel injector. Measure the compression in the cylinder. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0266?
Limited driving only, diagnose soon
How much does it cost to fix P0266?
The estimated repair cost for P0266 is $22–167. Actual cost depends on your vehicle, location, and labor rates.
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