TORQDEX // POWERTRAIN DTC
Throttle / Pedal Position Sensor Circuit Low Input
The throttle or accelerator position sensor signal is below the expected electrical range.
00 // CODE DEFINITION
What P0122 means
P0122 indicates that a throttle or pedal position signal is lower than the control module expects.
Sensor faults, wiring problems, reference-voltage issues, or throttle-body problems may place the vehicle into reduced-power mode.
01 // COMMON SYMPTOMS
What you may notice
02 // COMMON CAUSES
What can trigger P0122?
Position sensor fault
The throttle or pedal position sensor may produce an abnormally low signal.
Signal short to ground
Damaged wiring may pull the position signal low.
Reference voltage fault
Loss of the sensor reference supply can affect position readings.
03 // DRIVEABILITY
Can I keep driving with P0122?
Use caution. A high-severity fault can affect engine, transmission, electrical, or emissions-system operation. If the vehicle is running poorly, overheating, losing oil pressure, flashing the check-engine light, or entering reduced-power mode, avoid continued driving until the cause is diagnosed.
04 // DIAGNOSTIC ORDER
Start here
Review live position data
Verify that throttle and pedal readings change smoothly through their operating range.
Inspect wiring
Check the harness and connectors at the throttle body and pedal assembly.
Verify reference voltage
Check the sensor supply, ground, and signal circuits.
Check for related throttle codes
Multiple position or correlation codes may identify a shared circuit problem.
05 // COMMON REPAIR AREAS
Systems commonly involved
These are common areas associated with P0122. Testing should confirm the actual fault before parts are replaced.
Position sensor fault
The throttle or pedal position sensor may produce an abnormally low signal.
Signal short to ground
Damaged wiring may pull the position signal low.
Reference voltage fault
Loss of the sensor reference supply can affect position readings.
06 // DIAGNOSTIC PRINCIPLE
Confirm the fault before replacing parts
P0122 identifies a condition detected by the vehicle control system. It does not automatically identify one failed component. Test the affected system before replacing parts.
07 // RELATED TORQDEX DIAGNOSTICS
Related diagnostic guides
Continue troubleshooting by symptom and system. These TorqDex guides cover common diagnostic paths associated with this trouble code.
08 // RELATED CODES