DTC P0173 Audi
Fuel System Malfunction (Cylinder Bank 1)
Fuel System Malfunction (Cylinder Bank 1)
Description
Key on or engine running, all electrical components off and coolant temperature at least 80 degrees Celsius; and the ECM detected the Bank 1 Fuel Control System experienced a implausible signal
Cause and Solution
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
Video Guide
Diagnostic Info
- DTC Code: P0173
- Brand: Audi