P221A
NOx Sensor 1/2 Correlation Bank 1.
- Generic
- Powertrain
- Generic code
How this code is built
- P
- SystemPowertrain
- 2
- Defined bySAE, the same on every car
- 2
- AreaFuel and air metering (injector circuit)
- 1A
- FaultThe specific fault in that area
Guide
Writing the guide for P221A. The first open of a code takes up to a minute.