Diagnostic Trouble Code
P0122
Throttle Position Sensor/Switch A Circuit Low Input
Technical Description P0122
Throttle Position Sensor/Switch A Circuit Low Input
Symptoms P0122
1
Rough or low idle
2
Very high idle
3
Stalling
4
Surging
5
No/little acceleration
Possible Causes P0122
1
TPS not mounted securely
2
TPS circuit short to ground or another wire
3
Faulty TPS
4
Damaged computer (PCM)
Solutions & Repair Steps P0122
Refer to a vehicle specific repair manual to determine the location of the "A" TPS circuit.
Some recommended troubleshooting and repair steps are:
TIP: A visitor to our site offered this tip - a P0122 Code can also occur when the TPS is not ROTATED as it is installed. (The tab inside the sensor MUST be touching the rotating pins in the throttle body. In a 3.8L GM engine, this means inserting it with then connector at 12 o'clock before rotating it to 9 o'clock for the final mounting position.)
Other TPS sensor and circuit related DTCs: P0120, P0121, P0123, P0124
Some recommended troubleshooting and repair steps are:
TIP: A visitor to our site offered this tip - a P0122 Code can also occur when the TPS is not ROTATED as it is installed. (The tab inside the sensor MUST be touching the rotating pins in the throttle body. In a 3.8L GM engine, this means inserting it with then connector at 12 o'clock before rotating it to 9 o'clock for the final mounting position.)
Other TPS sensor and circuit related DTCs: P0120, P0121, P0123, P0124