BMW P1084: Fuel System Too Lean
Is your scanner showing BMW P1084?
No worries. We'll show you what it means and how to deal with it.
BMW P1084: Fuel System Too Lean
OVERVIEWWhat Does The BMW P1084 Code Mean?
Key on or engine running, all electrical components off and coolant temperature at least 80 degrees Celsius; and the DME detected the Bank 1 Adaptive Fuel Control System reached its rich correction limit (a lean A/F condition). The fuel status is in a clo
What Are The Potential Causes Of The BMW P1084 Code?
- Air leaks after the MAF sensor, or leaks in the PCV system
- Exhaust leaks before or near where the HO2S is mounted
- Fuel injector(s) restricted or not supplying enough fuel
- Fuel pump not supplying enough fuel during high fuel demand conditions
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
BMW P1084, DTCDECODE.
