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Estimator » Knock Sensor Replacement

Knock Sensor Replacement Cost




$328 to $446
National Average
Estimate includes:


Parts (excludes tax & fees)


Best Practices
  • 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.

Common Symptoms
  • 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.

Common Misdiagnoses
  • 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.

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