Drive with caution — fix soon.
This code means the voltage in the fuel composition sensor circuit has risen above the normal range, signaling a high input. It's usually caused by a short to voltage in the wiring, an open circuit, a poor connector, or a failed sensor. It's generally a sensor or wiring fault and is fixable once a technician inspects the circuit and tests the sensor.
$120 – $500
Varies by vehicle and root cause.
Usually yes. The car typically still runs, but the fuel mixture may be slightly off, so it's best to have it diagnosed within a week or two to avoid rough running or wasted fuel.
A wiring or connector repair may be around $120, while replacing the fuel composition sensor with parts and labor can reach about $500.
It's moderate. It rarely strands you, but the engine needs accurate fuel readings, so fixing it helps avoid drivability problems and poor fuel economy.
It means the circuit voltage is higher than normal, often from a short to power or an open circuit. The computer flags it because it can no longer trust the ethanol reading.