P0224: Throttle/Pedal Position Sensor/Switch B Circuit Intermittent — what it means, the affected system and what to check before replacing parts.
Meaning, symptoms, causes and checks
Throttle/Pedal Position Sensor/Switch B Circuit Intermittent. Basic catalogue definition; diagnostic details have not yet been reviewed.
Affected system: Powertrain
Symptoms
- Check Engine light
- Unstable or implausible scan data
- Poor idle, acceleration, or fuel economy
- Intermittent behavior as temperature or wiring position changes
Possible causes
- Loose pins, corrosion, damaged wiring, or poor ground
- Missing reference voltage or short to power or ground
- Contaminated, biased, or failed sensor
- Air, exhaust, or mechanical condition affecting the reading
What to check
- Save codes and freeze-frame data
- Check the value during engine-off, cold-start, and warm operation
- Inspect wiring and connectors
- Test voltage, ground, signal, and continuity to specification
- Verify a smooth plausible reading after repair
- Inspect the connector and harness before replacing the sensor
- Verify reference voltage, ground, signal, and heater supply
- Compare the reading with related sensors
Also written as: P0224-00, P022400, PO224 (some scan tools add the fault-type byte, e.g. -00).