P01CD
Cylinder 2 Injection Timing Performance - Over Retarded
What it means
P01CD means Cylinder 2 Injection Timing Performance - Over Retarded.
Check these first
- A restricted or clogged injector on cylinder 2
- A weak injector spray on cylinder 2
- Air in the fuel rail at cylinder 2
- Incorrect injector timing from a wrong calibration
- A worn injector on cylinder 2
What to do next
- Compare cylinder 2 injection timing on a scan tool
- Check the injector balance on cylinder 2
- Inspect the cylinder 2 injector connector and wiring
- Test cylinder 2 compression and misfire counters
- Replace the cylinder 2 injector if timing stays retarded
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.