P20EF
SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 1.
- Generic
- Powertrain
- Generic code
How this code is built
- P
- SystemPowertrain
- 2
- Defined bySAE, the same on every car
- 0
- AreaFuel and air metering, auxiliary emission controls
- EF
- FaultThe specific fault in that area
Guide
Writing the guide for P20EF. The first open of a code takes up to a minute.