DTC P1123: TP Sensor Stuck Open (More Than Expected): Condition

DTC is set if TP input is more than 50 percent when engine speed is more than 500 RPM and MAF input is less than 8.24 grams/sec. (1.09 lbs./min.) for 5 seconds or more. Possible causes are:

• Throttle Position (TP) sensor malfunction.
• MAF sensor malfunction.
• Corrosion in TP sensor signal circuit.
• Voltage drop in ground circuit.
• PCM malfunction.