Posts Tagged: pre-ignition damage

What Causes a Knock Sensor Code? 11 Common Causes

What Causes a Knock Sensor Code? Causes, Symptoms, Diagnosis, and Fixes Quick Summary A knock sensor code isn’t always a bad knock sensor. In fact, one of the biggest mistakes I see is replacing the sensor before checking the circuit and the engine itself. A knock sensor code can be caused by: • A damaged or failing knock sensor • Corroded, loose, or contaminated electrical connections • Broken, shorted, or high-resistance wiring • Incorrect knock sensor installation or mounting torque • Oil, coolant, or moisture contamination • Actual engine detonation … Read More