OBD-II code · Powertrain (generic)
P01CB Cylinder 1 Injection Timing Performance - Over Retarded
Injection timing on cylinder 1 lags more than allowed. Often injector wear or response drift.
Is it safe to drive with P01CB?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyInjector response drifted
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Injector Cyl1
Related codes
- P01CDCylinder 2 Injection Timing Performance - Over Retarded
- P01CFCylinder 3 Injection Timing Performance - Over Retarded
- P01D1Cylinder 4 Injection Timing Performance - Over Retarded
- P01D3Cylinder 5 Injection Timing Performance - Over Retarded
- P01D5Cylinder 6 Injection Timing Performance - Over Retarded
- P01D7Cylinder 7 Injection Timing Performance - Over Retarded
- P01D9Cylinder 8 Injection Timing Performance - Over Retarded
- P01DBCylinder 9 Injection Timing Performance - Over Retarded
- P01DDCylinder 10 Injection Timing Performance - Over Retarded
- P01DFCylinder 11 Injection Timing Performance - Over Retarded
- P01E1Cylinder 12 Injection Timing Performance - Over Retarded
- P01C8Fuel Rail/System Pressure - Too Low Bank 2
- P01C9Fuel Rail/System Pressure - Too High Bank 2
- P01CAFuel Rail Pressure Too Low - Engine Cranking Bank 2
- P01CCCylinder 1 Injection Timing Performance - Over Advanced
- P01CECylinder 2 Injection Timing Performance - Over Advanced
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.