What does code P1171 mean on Isuzu vehicles?
The ECU detects a lean air-fuel mixture condition during acceleration.
OBD-II Code Isuzu
P1171 — Isuzu — Fuel System Lean During Acceleration
The ECU detects a lean air-fuel mixture condition during acceleration.
Common symptoms
- Lack of power
- hesitation
Possible causes
- Vacuum leaks
- weak fuel pump
- clogged injectors
Initial recommendation
Inspect vacuum system, fuel pressure, and injector operation.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Isuzu code P1171 with your vehicle's actual symptoms for more complete diagnostic guidance.
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