Error code
OBD2 P0177
OBD2P0177
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Fuel Composition Sensor Circuit Range/Performance.
Severity
moderateCan drive but may experience reduced performance and increased emissions.
Summary
P0177 indicates an issue with the fuel composition sensor, which monitors the type of fuel being used in the engine.
Common Causes
- Faulty or malfunctioning fuel composition sensor
- Contaminated fuel
Fixes
- Replace the faulty fuel composition sensor.
FAQ
What does P0177 mean?
P0177 indicates a problem with the fuel composition sensor's performance or range.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
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- P0103Mass or Volume Air Flow Circuit High Input
- P0104Mass or Volume Air Flow Circuit Intermittent
- P0105Manifold Absolute Pressure/Barometric Pressure Circuit
- P0106Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance
- P0107Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- P0108Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- P0109Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
- P0110Intake Air Temperature Sensor 1 Circuit
- P0111Intake Air Temperature Sensor 1 Circuit Range/Performance