P0120 Scion Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit Malfunction
Quick Answer
The P0120 code for Scion vehicles indicates a malfunction in the Throttle/Pedal Position Sensor or Switch 'A' Circuit. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0120 Scion indicates Throttle / Pedal Position Sensor / Switch 'A' Circuit Malfunction.
- Common causes
- Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0120 Scion Description
The P0120 code for Scion vehicles indicates a malfunction in the Throttle/Pedal Position Sensor or Switch 'A' Circuit. This sensor is a crucial component of the vehicle's electronic throttle control system, which regulates the engine's air intake and fuel delivery based on driver input. The sensor detects the position of the accelerator pedal and relays this information to the engine control module (ECM). If the ECM detects an issue with the sensor's circuit, it will trigger the P0120 code.
Common Causes of P0120 Scion
- Faulty throttle position sensor
- Damaged wiring or connectors in the sensor circuit
- ECM malfunction
- Corrosion or moisture in the sensor connections
- Mechanical issues in the throttle control system
Symptoms of P0120 Scion
- Reduced acceleration and throttle response
- Engine stalling or hesitation
- Illuminated Check Engine Light
- Poor fuel economy
- Limp mode activation
How to Fix P0120 Scion
- Begin by diagnosing the issue using a diagnostic scanner to retrieve the trouble code and pinpoint the exact cause of the malfunction.
- Inspect the throttle position sensor and its wiring for any visible damage, corrosion, or loose connections. Replace or repair any damaged components as needed.
- Test the sensor's output voltage using a multimeter to ensure it is within the manufacturer's specified range. Adjust or replace the sensor if necessary.
- Clear the trouble code from the ECM's memory using the diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnostic testing may be required to identify any underlying issues with the throttle control system or ECM.
Cost to Fix P0120 Scion
The typical repair costs for addressing a P0120 code in a Scion vehicle can vary depending on the exact cause of the issue. On average, parts for a throttle position sensor replacement can range from $50 to $200, while labor costs can be between $100 and $200. In total, the repair may cost anywhere from $150 to $400, including parts and labor. However, it's important to note that these estimates are approximate, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at auto repair shops. It's advisable to consult with a professional technician for a more accurate cost estimate tailored to your specific situation.
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Information for Specific Scion Models
- P0120 2005 Scion xB — Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction
- P0120 2006 Scion xB — Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction
- P0120 2007 Scion xB — Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction
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