Think your car's throttle has a mind of its own? Could a bad throttle position sensor (TPS) be to blame for limp mode, rough idling, and the constant illumination of the engine management light?

In this video, Tim will guide you through every step of the diagnostic process. You’ll learn how to test a faulty throttle position sensor with a multimeter, identify bad TPS symptoms, and discover what fault codes to watch out for including P0120, P0121, P0122, and P0123.

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