2012 Nissan P0122: What It Means & Is It Safe to Drive?
P0122 on the 2012 Nissan: Throttle/Pedal Position Sensor A Circuit Low Input. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The throttle position sensor (TPS) is reporting a voltage below the minimum expected range. The PCM relies on TPS data to manage fuel delivery and transmission shift points. A low signal can cause erratic throttle response or limp mode.
Common causes on the 2012 Nissan
- Failed throttle position sensor
- Damaged or corroded TPS wiring or connector
- Faulty throttle body
- PCM failure (rare)
Symptoms
- Check Engine Light
- Hesitation or stumble on acceleration
- Engine may enter limp mode
- Erratic idle
Typical fixes
- Replace throttle position sensor
- Clean throttle body and inspect TPS connector
- Repair damaged wiring
Repair cost range
For a 2012 Nissan, repairs for P0122 typically fall between $100 and $350, depending on the root cause and labor rates in your area.
Known issues on Nissan
Nissan P0122 on IACV-equipped models (older) can be a standalone TPS, while on ETCS (electronic throttle) models the sensor is integrated into the throttle body. Identify which system your model uses before ordering parts.
Most commonly affected models