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Engine-Codes – Subaru – P0222 Subaru

P0222 Subaru Code - Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input

Quick Answer

The P0222 diagnostic trouble code for Subaru vehicles indicates an issue with the Throttle/Pedal Position Sensor/Switch 'B' Circuit, specifically a low input voltage. Common causes include Faulty throttle position sensor, Damaged wiring or connectors, Issues with the ECM. 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
P0222 Subaru indicates Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors, Issues with the ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0222 Subaru Description

The P0222 diagnostic trouble code for Subaru vehicles indicates an issue with the Throttle/Pedal Position Sensor/Switch 'B' Circuit, specifically a low input voltage. This sensor is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM) to regulate the engine's performance. When the sensor detects a low input signal, it can cause a variety of performance issues in the vehicle.

OBDII Code P0222 Subaru - Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input
P0222 Subaru Code - Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input

Common Causes of P0222 Subaru

  1. Faulty throttle position sensor
  2. Damaged wiring or connectors
  3. Issues with the ECM
  4. Corrosion or contamination in the sensor
  5. Electrical problems in the circuit

Symptoms of P0222 Subaru

  1. Decreased engine power
  2. Poor acceleration
  3. Rough idling
  4. Stalling
  5. Decreased fuel efficiency

How to Fix P0222 Subaru

  1. Begin by conducting a thorough inspection of the throttle position sensor, wiring, and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's voltage output and compare it to the manufacturer's specifications to determine if it is functioning correctly.
  3. If the sensor is faulty, replace it with a new, OEM-quality part to ensure reliable performance.
  4. Clear the diagnostic trouble codes from the ECM using a scan tool and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying electrical issues or ECM malfunctions.

Cost to Fix P0222 Subaru

The typical repair costs for addressing a P0222 code in a Subaru vehicle can vary depending on the specific model and year. In general, the cost of replacing a throttle position sensor can range from $100 to $300, including parts and labor. Additional costs may apply if wiring repairs or ECM diagnostics are necessary. It is important to consult with a qualified mechanic or dealership to obtain an accurate estimate based on the vehicle's individual circumstances and location. Labor rates at auto repair shops can vary, so it's advisable to inquire about rates specific to your area.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0222 Subaru Code

1. What are common symptoms of OBDII code P0222 in a Subaru related to the Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input?

- Common symptoms may include poor acceleration, stalling, rough idling, and difficulty maintaining speed.

2. What are some possible causes of the Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input code (P0222) in a Subaru?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, a defective accelerator pedal position sensor, or a problem with the engine control module.

3. How can I diagnose the cause of OBDII code P0222 in my Subaru?

- Diagnosing the issue typically involves using an OBDII scanner to retrieve the specific code, inspecting the throttle and pedal position sensors, checking for damaged wiring, and conducting voltage tests.

4. Can I continue driving my Subaru with the P0222 code present?

- It is not recommended to drive your vehicle with the P0222 code active, as it can lead to further engine performance issues and potential safety concerns.

5. What are the steps to repair OBDII code P0222 related to the Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input in a Subaru?

- Repair steps may include replacing the faulty throttle or pedal position sensor, repairing damaged wiring, ensuring proper connections, or reprogramming the engine control module.

6. Is it possible to reset the P0222 code in my Subaru without fixing the underlying issue?

- While you can temporarily clear the code with an OBDII scanner, it is important to address the root cause to prevent the code from reappearing.

7. How much does it typically cost to repair OBDII code P0222 in a Subaru?

- The cost of repairs can vary depending on the specific cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any maintenance tips to prevent the Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input code in a Subaru?

- Regularly inspecting and cleaning throttle and pedal position sensors, as well as ensuring proper electrical connections, can help prevent issues that trigger the P0222 code.

9. Can weather or environmental factors trigger the P0222 code in a Subaru?

- Extreme temperature fluctuations or moisture ingress can potentially affect the sensors and wiring related to the throttle and pedal positions, leading to the P0222 code.

10. How long does it take to repair the Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input code in a Subaru?

- Repair times can vary depending on the specific cause of the issue and the availability of parts, but it may take a few hours to a day for a mechanic to diagnose and fix the problem.

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