DTC P0123: Throttle Position Sensor Circuit - High Input: Condition
WARNING: This page is about a different car, the 2003 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when Engine Control Module (ECM) detects Throttle Position (TP) sensor voltage is more than 4.8 volts for one second. MIL is illuminated when ECM detects malfunction during first drive cycle. Possible causes are:
- ECM malfunction.
- TP sensor malfunction.
- TP sensor circuit malfunction.