What does code P0122 mean?
Low voltage detected from TPS A indicating less throttle opening than actual.
OBD-II Code
P0122 — Throttle Position Sensor or Switch A Circuit Low Input
Low voltage detected from TPS A indicating less throttle opening than actual.
Common symptoms
- Poor acceleration
- lack of power
- sudden response changes
Possible causes
- Signal wire shorted to ground
- faulty TPS
- dirty throttle plate
Initial recommendation
Inspect wiring, clean throttle body, replace TPS if voltage output is incorrect.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0122 with your vehicle's actual symptoms for more complete diagnostic guidance.
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