What does code P0173 mean?
Fuel trim values for bank 2 are outside acceptable range
OBD-II Code
P0173 — Fuel Trim Malfunction Bank 2
Fuel trim values for bank 2 are outside acceptable range
Common symptoms
- Hesitation
- high fuel consumption
- intermittent faults
Possible causes
- Vacuum leaks on bank 2
- dirty MAF sensor
- dirty injectors
- incorrect fuel pressure
Initial recommendation
Check MAF sensor, vacuum leaks, fuel pressure and injector flow.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0173 with your vehicle's actual symptoms for more complete diagnostic guidance.
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