P0221
Throttle/Petal Position Sensor/Switch B Circuit Range/Performance Problem
Generic code
Injector Circuit
High severity
Moderate repair
Free on OBD DashX
Want real-world data on P0221?
See which problems come with P0221, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0221 means
- The fault code P0221 indicates that there is an issue with the circuit controlling the throttle or pedal position sensor/switch B. This may cause the engine to have poor performance or not start at all.
Possible symptoms
- Engine runs poorly or not at all
- Illuminated check engine light
- Engine hesitates or stumbles during acceleration
- Reduced engine power or acceleration
Possible causes
- Failed throttle or pedal position sensor/switch B
- Faulty wiring or connections in the circuit
- Loose or corroded electrical connections
- Failed engine control module (ECM)
Related parts
- Throttle Position Sensor: Throttle position sensor generally denotes the position of the accelerator pedal. Problems lead to poor acceleration
Possible solutions
- Replace the throttle or pedal position sensor/switch B
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0221 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0221 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.