P0121 Chevrolet -

Question

replaced the throttle position sensor and the gas pedal, still have engine light on , reset it with tester and light will come back on. what should i look for next ?

Answer 1

Hi there,

Since replacing the sensor hasn't solved the issue, it's likely a wiring problem. Here is some more info for you.

P0121 CHEVROLET - Throttle Position Sensor 1 Performance

Read more: https://www.autocodes.com/p0121_chevrolet.html