P0223 CHEVROLET – Throttle Position Sensor 2 Circuit High Voltage

P0223 CHEVROLET Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),No throttle response

P0223 CHEVROLET Possible Causes

Faulty Throttle Body Assembly,Throttle Body Assembly harness is open or shorted,Throttle Body Assembly poor electrical connection,Faulty Engine Control Module (ECM)

P0223 CHEVROLET Description

The Throttle Body Assembly contains 2 Throttle Position (TP) sensors. The TP sensors are mounted to the throttle body assembly and are not serviceable. The TP sensors provide a signal voltage that changes relative to the throttle blade angle. The Engine Control Module (ECM) supplies the TP sensors with a common 5 V reference circuit, a common low reference circuit, and 2 independent signal circuits. The TP sensors have opposite functionality. TP sensor 1 signal voltage decreases and TP sensor 2 signal voltage increases as the accelerator pedal increases to Wide Open Throttle (WOT).