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Engine-Codes – Scion – P0122 2006 Scion xB

P0122 2006 Scion xB Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Quick Answer

The P0122 code for a 2006 Scion xB indicates an issue with the Throttle Position Sensor/Switch 'A' Circuit registering a low input. Common causes include Faulty Throttle Position Sensor, Damaged or corroded wiring/connectors in the TPS circuit, 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
P0122 2006 Scion xB indicates Throttle Position Sensor/Switch 'A' Circuit Low Input.
Common causes
Common causes include Faulty Throttle Position Sensor, Damaged or corroded wiring/connectors in the TPS circuit, 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 17, 2024
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Code P0122 2006 Scion xB Description

The P0122 code for a 2006 Scion xB indicates an issue with the Throttle Position Sensor/Switch 'A' Circuit registering a low input. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, as it monitors the position of the throttle valve and sends this information to the engine control module (ECM). The ECM uses this data to determine the appropriate air-fuel mixture for optimal engine performance.

OBDII Code P0122 2006 Scion xB - Throttle Position Sensor/Switch 'A' Circuit Low Input
P0122 2006 Scion xB Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Common Causes of P0122 2006 Scion xB

  1. Faulty Throttle Position Sensor
  2. Damaged or corroded wiring/connectors in the TPS circuit
  3. Issues with the ECM
  4. Throttle body malfunction
  5. Poor electrical connection

Symptoms of P0122 2006 Scion xB

  1. Poor acceleration and throttle response
  2. Rough idling or stalling
  3. Difficulty starting the vehicle
  4. Reduced fuel efficiency
  5. Check Engine Light illuminated on the dashboard

How to Fix P0122 2006 Scion xB

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the P0122 code and pinpoint the exact cause.
  2. Inspect the Throttle Position Sensor for any signs of damage or wear. Replace the sensor if necessary.
  3. Check the wiring and connectors in the TPS circuit for any damage, corrosion, or loose connections. Repair or replace as needed.
  4. Test the ECM for any faults or malfunctions. Reset or replace the ECM if necessary.
  5. Clear the error code from the ECM memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0122 2006 Scion xB

The typical repair costs for addressing a P0122 code on a 2006 Scion xB can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it's recommended to inquire with local auto repair shops.

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 P0122 2006 Scion xB Code

1. What are the common symptoms of OBDII code P0122 in a 2006 Scion xB?

The common symptoms of code P0122 in a 2006 Scion xB may include poor acceleration, stalling, rough idling, and decreased fuel efficiency.

2. What does the OBDII code P0122 'Throttle Position Sensor/Switch 'A' Circuit Low Input' mean for a 2006 Scion xB?

Code P0122 indicates that the Engine Control Module (ECM) has detected a low voltage signal from the throttle position sensor or switch in the 'A' circuit of the 2006 Scion xB.

3. What are possible causes of the P0122 code in a 2006 Scion xB?

Possible causes of code P0122 in a 2006 Scion xB include a faulty throttle position sensor, damaged wiring or connectors in the throttle position sensor circuit, or issues with the ECM.

4. How can I diagnose the cause of OBDII code P0122 in my 2006 Scion xB?

To diagnose code P0122, you can use a scan tool to read the code and check the throttle position sensor's voltage output. Inspect the wiring and connectors for any damage and test the sensor's resistance.

5. Can I drive my 2006 Scion xB with OBDII code P0122?

It is not recommended to drive your 2006 Scion xB with code P0122 as it can cause performance issues and potentially lead to further damage. It's best to address the issue promptly.

6. How do I repair OBDII code P0122 in a 2006 Scion xB?

To repair code P0122, you may need to replace the throttle position sensor, repair any damaged wiring or connectors, or reprogram the ECM if necessary.

7. Is it safe to reset the OBDII code P0122 in my 2006 Scion xB without fixing the underlying issue?

Resetting the code without fixing the underlying issue will only temporarily clear the error code. It is important to address the root cause of the problem to prevent it from reoccurring.

8. Will a dirty throttle body cause OBDII code P0122 in a 2006 Scion xB?

While a dirty throttle body can cause performance issues, including erratic throttle response, it is not a direct cause of code P0122. However, it is still recommended to keep the throttle body clean for optimal performance.

9. Can a disconnected or loose throttle position sensor cause OBDII code P0122 in a 2006 Scion xB?

Yes, a disconnected or loose throttle position sensor can trigger code P0122 in a 2006 Scion xB. Ensure that the sensor is securely connected and functioning properly.

10. How can I prevent OBDII code P0122 from appearing in my 2006 Scion xB in the future?

Regular maintenance, including checking the throttle position sensor's condition and keeping the wiring connections secure, can help prevent code P0122 from appearing in your 2006 Scion xB.

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