P21B1
Reductant Level Sensor C Circuit Intermittent/Erratic.
- Generic
- Powertrain
- Generic code
How this code is built
- P
- SystemPowertrain
- 2
- Defined bySAE, the same on every car
- 1
- AreaFuel and air metering
- B1
- FaultThe specific fault in that area
Guide
Writing the guide for P21B1. The first open of a code takes up to a minute.