Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.

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Knock Sensor

A sensor which detects engine knock or 'ping' and then transmits a signal to the engine's computer. Too much knock can break these sensors, which have to then be replaced.



See Also:
Distributor
Generator
Open Circuit
Ignition Coil
ECM
Sensor
Coil
Resistance

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