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Toyota 4Runner Knock Sensor Replacement Cost

The average cost for a Toyota 4Runner Knock Sensor Replacement is between $973 and $1604. Labor costs are estimated between $589 and $744 while parts are priced between $384 and $860. Estimate does not include taxes and fees.
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How Much Does a Knock Sensor Replacement Cost?

Knock Sensor Replacement Service and Cost

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.

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 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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