OBD-II code · Powertrain (generic)
P0220 Throttle/Pedal Position Sensor/Switch "B" Circuit
A general electrical fault was detected in the secondary (B) throttle or pedal position sensor circuit. Modern drive-by-wire systems use redundant TPS tracks; the ECU compares them and flags this code on the B channel when out of range.
Is it safe to drive with P0220?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyTPS B element failed
- PossibleWiring or connector fault
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, Pedal Position Sensor, Tps Wiring
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.