OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P0222?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyTPS B circuit open or shorted to ground
- PossibleWiring or connector fault
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2 h
- Emissions test
- Likely to fail
- Parts involved
- Throttle Position Sensor B, Tps Wiring
Related codes
- P0220Throttle/Pedal Position Sensor/Switch "B" Circuit
- P021FCylinder 12 Injection Timing
- P0221Throttle/Pedal Position Sensor/Switch "B" Range/Performance
- P0223Throttle/Pedal Position Sensor/Switch "B" Circuit High Input
- P0224Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
- P0225Throttle/Pedal Position Sensor/Switch C Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.