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Engine-Codes – KIA – P0122 KIA

P0122 KIA Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code for KIA vehicles indicates that there is a low input signal detected in the throttle/pedal position sensor 'A' circuit. Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors in the sensor circuit, Issues with the ECM or other related components. 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 KIA indicates Throttle/Pedal Position Sensor 'A' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors in the sensor circuit, Issues with the ECM or other related components.
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 07, 2024
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Code P0122 KIA Description

The P0122 diagnostic trouble code for KIA vehicles indicates that there is a low input signal detected in the throttle/pedal position sensor 'A' circuit. The throttle position sensor (TPS) is a crucial component that monitors the position of the throttle valve in the engine. This data is used by the engine control module (ECM) to adjust fuel injection, ignition timing, and other parameters to ensure optimal engine performance.

OBDII Code P0122 KIA - Throttle/Pedal Position Sensor 'A' Circuit Low Input
P0122 KIA Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

Common Causes of P0122 KIA

  1. Faulty throttle position sensor.
  2. Corroded or damaged wiring/connectors in the sensor circuit.
  3. Issues with the ECM or other related components.
  4. Environmental factors such as moisture or debris affecting sensor performance.
  5. Poor electrical connections or grounds affecting sensor signal.

Symptoms of P0122 KIA

  1. Engine hesitation or lack of response to throttle input.
  2. Rough idling or stalling at idle.
  3. Reduced fuel efficiency.
  4. Check Engine Light illuminated on the dashboard.
  5. Reduced engine power or acceleration.

How to Fix P0122 KIA

  1. Begin by diagnosing the root cause of the P0122 code using a scan tool to monitor TPS sensor data.
  2. Inspect the throttle position sensor, wiring, and connectors for signs of damage or corrosion.
  3. Replace the throttle position sensor if it is found to be faulty.
  4. Repair or replace any damaged wiring or connectors in the sensor circuit.
  5. Clear the diagnostic trouble codes, reset the ECM, and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0122 KIA

The typical repair costs for addressing a P0122 code in a KIA 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 be incurred if wiring repairs or ECM diagnostics are necessary. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's specific needs. Keep in mind that labor rates and diagnosis fees can vary, so it's recommended to inquire about these costs upfront.

When is the Code Detected?

The Throttle Position Sensor (TPS) signal 1 circuit has reported an open or low voltage

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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 KIA Code

1. What are the common symptoms of OBDII code P0122 in a KIA vehicle?

- Common symptoms include reduced engine power, hesitation or stalling while driving, and the vehicle going into limp mode.

2. What does the OBDII code P0122 in a KIA indicate?

- The code P0122 indicates that the Throttle/Pedal Position Sensor 'A' Circuit is registering a low input, which may affect proper throttle response.

3. What are the possible causes of the Throttle/Pedal Position Sensor 'A' Circuit low input in a KIA?

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

4. How can I diagnose and repair OBDII code P0122 in my KIA?

- You can diagnose the issue by checking the throttle position sensor's wiring and connectors for damage, testing the sensor's voltage output, and scanning the system for any related trouble codes. Repair may involve replacing the sensor, repairing damaged wiring, or reprogramming the engine control module.

5. Is it safe to continue driving my KIA with OBDII code P0122?

- It is not recommended to continue driving with code P0122 as it can lead to further damage to the engine or other components. It's best to address the issue promptly to ensure safe driving.

6. Can a DIY enthusiast fix OBDII code P0122 in a KIA?

- Depending on your skill level and access to tools, you may be able to diagnose and repair P0122 yourself. However, it's recommended to have a professional mechanic perform the repair to ensure proper diagnosis and resolution.

7. Will resetting the OBDII code P0122 in my KIA make it go away permanently?

- Simply resetting the code may temporarily clear the check engine light, but the underlying issue causing P0122 will still exist. It's crucial to diagnose and fix the root cause to prevent the code from reappearing.

8. How long does it typically take to repair OBDII code P0122 in a KIA?

- The repair time for P0122 can vary depending on the specific cause of the issue. It may take anywhere from 1-3 hours for a mechanic to diagnose and repair the problem.

9. Can extreme weather conditions affect the occurrence of OBDII code P0122 in a KIA?

- Yes, extreme temperatures or humidity levels can potentially impact the throttle position sensor's performance, leading to the triggering of code P0122 in your KIA.

10. Is it necessary to replace the entire throttle body if OBDII code P0122 is detected in a KIA?

- In most cases, you won't need to replace the entire throttle body for code P0122. The issue is usually related to the throttle position sensor or its circuit, which can be repaired or replaced separately.

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