What P0222 means
Throttle/Petal Position Sensor/Switch B Circuit Low Input
How to diagnose
- Read freeze frame data. When P0222 set, your ECU snapshotted every sensor at that moment. This tells you what the car was doing when the fault triggered — RPM, load, coolant temp, throttle position, fuel trims. Almost always enough info to figure out the cause without further testing.
- Check for related codes. If you have P0222 plus other codes, fix the earliest one in the chain first — a single root cause often triggers multiple codes.
- Cheap fixes first. For most codes, the order is: inspect connectors + wiring (free), check for vacuum leaks (cheap), replace sensor (moderate), replace mechanical part (expensive). Follow that ladder before dropping money on parts.
Manufacturer-specific descriptions
Different manufacturers use P0222 for slightly different failure modes:
| BMW | Throttle/Pedal Position Sensor/Switch "B" Circuit Low |
| FORD | Throttle Position Sensor B Circuit Low Input Edge Products 1080 S. Depot Dr. Ogden, UT 84404 888-360-3343 www.edgeproducts.com Ford DTC Codes 4 |
| HONDA | Throttle Position (TP) Sensor 2 Circuit Low Voltage |
| MITSUBISHI | Throttle/pedal Position Sensor/Switch B Circuit Low Input; TPS(sub) low |
| NISSAN | Throttle/pedal Position Sensor/Switch B Circuit Low Input |
| VOLKSWAGEN | APP Sensor 2 Circuit Low Voltage |
Read P0222 on your own car
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