P01CB
Cylinder 1 Injection Timing Performance - Over Retarded
Injection timing on cylinder 1 lags more than allowed. Often injector wear or response drift.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Injector response driftedCommon
Parts involved
- Injector Cyl1
P01CB is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.