The average cost for a Knock Sensor Replacement is between $329 and $451. Labor costs are estimated between $250 and $316 while parts are priced between $79 and $135.Get a personalized estimate based on your location and specific car. Estimate does not include taxes and fees.
Knock Sensor Replacement Cost
Knock Sensor Replacement Estimate (National Average)
Only use factory OEM knock sensors and be sure to check for any relevant Technical Service Bulletins (TSBs), necessary software updates, and re-calibration procedures.
When a knock sensor fails, the engine may lack power, have poor acceleration, ping or knock on acceleration, and get poor fuel economy.
The Check Engine Light may illuminate with a fault code set for one or more knock sensors.
A knock sensor code isn't always triggered by a defective knock sensor. It can be triggered by a malfunctioning EGR system, a lean air-to-fuel ratio, worn ignition components, a cooling system problem, or an engine mechanical problem.