P1090
Pre-Catalyst Fuel Trim Too Lean Bank 1.
- BMW
- Powertrain
- Manufacturer code
How this code is built
- P
- SystemPowertrain
- 1
- Defined byThe manufacturer
- 0
- AreaFuel and air metering, auxiliary emission controls
- 90
- FaultThe specific fault in that area
Guide
Writing the guide for P1090. The first open of a code takes up to a minute.