P2B08 — Cold Start Cylinder 1 Injection Pulse Performance
During cold start, the ECM detects that the injection pulse on cylinder 1 does not produce the expected combustion result. Cold-start specific pulse calibration deviates from learned values.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Fuel injector cyl 1
- Cold start calibration
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Injector behaviour drifts at low temperature
- Poor fuel atomization at cold start
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.