P0176
Fuel Composition Sensor Circuit Malfunction
DTC P0176, sometimes indicated as P017600 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing fuel composition sensor circuit malfunction.
The fuel composition sensor (FCS) is used to determine the percentage of ethanol in fuel. When the FCS fails, the ECU may not be able to correctly determine the fuel composition, which can cause the engine to run rough or stall.
The most common cause of a P0176 code is a failed fuel composition sensor. Other causes can include a failed wiring harness, a failed ECU, or a failed fuel pump.
If the code is caused by a failed fuel composition sensor, the most common solution is to replace the sensor. If the wiring harness is at fault, the harness should be replaced. If the ECU is at fault, the ECU should be replaced. If the fuel pump is at fault, the fuel pump should be replaced.
- P0176: Fuel Composition Sensor Circuit Malfunction
- P0176: Fuel Composition Sensor Circuit
- P0176: Fuel Compensation Sensor Circuit Malfunction
- P0176: Fuel composition sensor – circuit malfunction
- P0176 00: Damage to the mixture composition sensor circuit
- P0176 00: Fuel composition sensor - circuit malfunction
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- 12537 - ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
FORD: Some vehicles with 3.0l flex fuel engine may exhibit a hard / no start, rough idle or other drivability concerns with or without diagnostic trouble code P0176. *tt - 12722 - VEHICLE SPEED CONTROL:CRUISE CONTROL
FORD: Some vehicles equipped with 3.0l flex fuel engine (vin code v) may exhibit a hard / no start, rough idle and / or other driveability concerns with or without diagnostic trouble code P0176. *tt - 0100801 - ELECTRICAL SYSTEM
MAZDA: Some vehicles built prior to january 2, 2001 may exhibit rough idle, anti-lock brake system (abs) warning lamp illumination, inoperative or erratic speedometer, diagnostic trouble code (dtc) P0500, P0501, P0503, P1721, P0176, P1000, abs dtc - 010502 - ELECTRICAL SYSTEM
FORD: Exhbiting a rough idle, abs warning lamp illumination, inoperative or erratic speedometer, diagnostic trouble codes (dtc) P0500, P0501, P0503, P1721, P0176 or P1000, abs dtc C1230, rabs dtc 9 or 16, or a delayed or harsh shifting automatic - 0152 - ELECTRICAL SYSTEM
FORD: Some vehicles may exhibit a rough idle, anti-lock brake system (abs) warning lamp illumination, inoperative or erratic speedometer, diagnostic trouble codes (dtcs) P0500, P0501, P0503, P1721, P0176, P1000, abs dtc 9, rabs dtc 16, or a delay - 6235 - VEHICLE SPEED CONTROL:CRUISE CONTROL
FORD: Some vehicles equipped with flex fuel engines may exhibit a hard / no start, rough idle and / or other driveability concerns with or without diagnostic trouble code (dtc) P0176. *tt - 6303 - VEHICLE SPEED CONTROL:LINKAGES
FORD: Vehicles may exhibit hesitation, crank / no star, stall-stumble, diagnostic trouble code (dtc) P0176, or misfire diagnostic trouble code (dtc(s). *tt - 5864 - ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
FORD: Flex fuel engine may exhibit a hard / no start, rough idle or other driviability concerns w/ or w/out dtc P0176. *tt - 96224 - ELECTRICAL SYSTEM:IGNITION:MODULE
FORD: Malfunction indicator lamp (mil) illuminated - diagnostic trouble code (dtc) P0176 - 3.0l flexible fuel vehicles using ethanol/methanol (e85/m85) and/or gasoline - vehicles built through 8/16/96. *tw