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P0177 is a diagnostic trouble code (DTC) for "Fuel Composition Sensor Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Fuel Composition Sensor Circuit Range/Performance
P0177 is a generic OBD-II code indicating that the diesel fuel sensor has detected water in the fuel filter, or the fuel composition sensor is out of its specification range.
Scans codes and documents the freeze frame data, then clears the codes to verify code returns
Drains off water in the fuel filter by opening the water drain valve on the fuel filter housing
If the Water in the Fuel Light does not go out, removes the fuel filter and tests the sensor, replacing it if shorted or out of specification range for the vehicle being tested
Clears codes and tests the system to see if the Water in Fuel Light goes out, and the P0177 code does not return
Follow these simple guidelines to prevent misdiagnosis:
Not many manufactures use the code P0177, and the code is set in the computer memory to indicate the engine fuel has or had water in it.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.