P01CB
Cylinder 1 Injection Timing Performance - Over Retarded
Injection timing on cylinder 1 lags more than allowed. Often injector wear or response drift.
Injection timing on cylinder 1 lags more than allowed. Often injector wear or response drift.
Common causes
- high
Injector response drifted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P01CB mean?
P01CB means "Cylinder 1 Injection Timing Performance - Over Retarded". It is a generic OBD-II code that points to a fault in the fuel & air metering.
What are the most common causes of P01CB?
injector response drifted — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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