P0201 Cylinder 1 Injector A Circuit
What does P0201 mean?
P0201 — Cylinder 1 Injector A Circuit. This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects cylinder 1 injector a circuit. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0201
- Open or shorted cylinder 1 injector wiring
- Failed cylinder 1 injector
- Damaged injector connector
- Faulty PCM injector driver
How to fix P0201
- Measure cylinder 1 injector resistance against the other injectors
- Check the connector pins and harness routing
- Confirm the PCM fires the injector with a noid light or scope
- Repair wiring or replace the injector
- Clear the code and confirm the misfire clears