Knock Sensor Circuit Malfunction
Usually no noticeable symptoms, Possible reduced fuel economy, Slight power loss under load
| Job | Range |
|---|---|
| Knock sensor replacement (DIY, varies by access) | $60–$150 |
| Knock sensor replacement (shop, intake removal needed on some V6/V8) | $250–$550 |
| Wiring harness repair | $80–$200 |
These percentages are general patterns, not a diagnosis for your specific vehicle. Have a technician scan your car to confirm which component is actually failing.
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