P21AC
Reductant Level Sensor B 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
- AC
- FaultThe specific fault in that area
Guide
Writing the guide for P21AC. The first open of a code takes up to a minute.