OBD-II · Engine and powertrain (P)
P0263
Cylinder 1 contribution/balance fault
What it means
Cylinder 1 is contributing less or differently than expected.
Likely causes, most likely first
| No. | Cause |
|---|---|
| 01 | injector flow issue |
| 02 | compression loss |
| 03 | wiring or injector coding issue |
| 04 | air in fuel |
| 05 | fuel quality problem |