P221B
NOx Sensor 1/2 Correlation Bank 2.
- 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)
- 1B
- FaultThe specific fault in that area
Guide
Writing the guide for P221B. The first open of a code takes up to a minute.