Powertrain
generic / SAE
P0222
Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input
The B channel voltage is below the lower diagnostic threshold, suggesting an open circuit, short to ground, or sensor element failure on track B.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number2 / 22
Possible causes
- TPS B circuit open or shorted to ground high
- Wiring or connector fault medium
- Connector pins corroded - high contact resistance low
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–400 €
- Estimated time: 0.3–2 h
- Component: throttle position sensor b
- Component: tps wiring
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012