P0221high severityPowertrain
Throttle/Pedal Position Sensor/Switch B Range/Performance
on 2000 BMW 525i 2.5L I6 M54 · RWD
What this code means
The secondary TPS signal is out of expected range.
Symptoms
- Check Engine Light
- Limp mode
- Erratic throttle
Common causes
- Worn TPS B
- Carbon on throttle plate
- Throttle body issue
Diagnostic steps
- Compare TPS A and B readings
- Clean throttle body
- Test TPS sweep
Repair notes
Clean throttle body or replace TPS.
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