P0122Toyota C-hrYears: 1996 - 2026
Throttle/Pedal Position Sensor/Switch A Circuit Low Input
Reviewed by ASE Certified Technician
What does this mean?
Code P0122 indicates the TPS 'A' signal voltage is below the minimum expected threshold.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Toyota C-hr models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty throttle position sensor (TPS)
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Symptoms to Watch For
- Check Engine Light is illuminated
- Poor acceleration or sluggish response
- Engine stalling or dying unexpectedly
- Vehicle enters reduced power / limp mode
- Rough or unstable idle