What does code P0266 mean?
Cylinder 2 is producing less power than the others
OBD-II Code
P0266 — Cylinder 2 Contribution Balance Fault
Cylinder 2 is producing less power than the others
Common symptoms
- Rough engine operation
- vibration
Possible causes
- Weak injector
- low compression
- worn spark plug
Initial recommendation
Measure compression and inspect injector and ignition coil.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0266 with your vehicle's actual symptoms for more complete diagnostic guidance.
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