DTC P1123: Throttle Position Stuck Open, High Input: Condition

DTC is set if TP sensor position is more than 50 percent for 5 seconds when engine speed is more than 500 RPM and Mass Airflow (MAF) sensor reading is less than 5.3 g/sec. This is a continuous monitor. MIL is illuminated when Powertrain Control Module (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:

• TP sensor malfunction.
• MAF sensor malfunction.
• Corrosion in signal circuit.
• Voltage drop in ground circuit.
• Powertrain Control Module (PCM) function.