Toyota 4Runner Knock Sensor Replacement Cost.

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The average cost for a Knock Sensor Replacement is between $772 and $1163. Labor costs are estimated between $580 and $733 while parts are priced between $192 and $430. Estimate does not include taxes and fees.
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Learn More About Knock Sensor Replacement Cost

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.

Most Common Toyota 4Runner Repairs

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