Drive with caution — fix soon.
This code means the voltage from the knock sensor is reading lower than expected, often near zero. It usually points to a shorted or open sensor circuit, a failed knock sensor, or damaged wiring. The fix typically involves checking the wiring for shorts to ground and replacing the knock sensor if it has failed.
$150 – $500
Varies by vehicle and root cause.
Usually yes, for short trips. The engine runs, but it may not be fully protected from detonation. Go easy on the throttle and get it diagnosed within a week.
Generally $150 to $500. The sensor part is often affordable, but labor can climb if the sensor is buried under the intake manifold.
It's moderate. There's no immediate breakdown, but without a working knock sensor the engine loses protection from harmful detonation over time.
It means the sensor's voltage signal is reading too low, often near zero. This usually points to a short to ground, a broken wire, or a failed sensor.