P0224: Throttle/Pedal Position Sensor B Circuit Intermittent
The P0224 code indicates an intermittent fault in the throttle/pedal position sensor B circuit. This sensor is part of the electronic throttle control system and sends voltage signals to the PCM to determine throttle position. An intermittent signal can cause erratic throttle response, hesitation, or stalling. Common causes include a faulty sensor, wiring issues, or poor electrical connections.
01. Most Common Causes
- Faulty throttle/pedal position sensor B
- Damaged or corroded wiring/connectors in sensor circuit
- Intermittent short or open in the circuit
- Poor electrical connection at sensor or PCM
02. Symptoms You Will Notice
- Check Engine Light on
- Intermittent hesitation or surging during acceleration
- Reduced engine power or limp mode
- Erratic idle or stalling
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data to capture conditions when fault occurred.
Step 2: Visually inspect the throttle/pedal position sensor wiring and connectors for damage, corrosion, or loose pins.
Step 3: Use a multimeter to check sensor voltage and ground signals while wiggling the harness to reproduce the intermittent fault.
Step 4: Compare sensor readings to manufacturer specifications; replace sensor if readings are out of range.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as intermittent throttle response can lead to sudden loss of power or unintended acceleration, posing a safety risk.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, depending on whether the sensor or wiring needs replacement.