AutoCodes – Hyundai – P0122 Hyundai

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

Quick Answer

The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection. 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 Hyundai indicates Throttle/Pedal Position Sensor 'A' Circuit Low Input.
Common causes: Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection.
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 Popularity 32,794

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0122 Hyundai Description

The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.

OBDII Code P0122 Hyundai - Throttle/Pedal Position Sensor 'A' Circuit Low Input - AutoCodes.com — P0122 Hyundai Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0122 Hyundai?

Faulty throttle position sensor.
Throttle position sensor harness is open or shorted
Throttle position sensor circuit poor electrical connection

How to Fix the DTC P0122 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0122 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 Hyundai Code

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

- Common symptoms include a decrease in engine power, difficulty accelerating, rough idling, and the vehicle going into limp mode.

2. What causes the Throttle/Pedal Position Sensor 'A' Circuit Low Input code in a Hyundai?

- The code P0122 is typically triggered by a faulty throttle position sensor, damaged wiring or connectors, or issues with the throttle body.

3. How can I diagnose the cause of OBDII code P0122 in my Hyundai?

- To diagnose the issue, you can use a diagnostic scanner to read the code, visually inspect the throttle position sensor and its wiring, and perform voltage tests on the sensor.

4. Can a dirty throttle body cause code P0122 in a Hyundai?

- Yes, a dirty or malfunctioning throttle body can disrupt the signal from the throttle position sensor and lead to the P0122 error code.

5. Is it safe to continue driving with OBDII code P0122 present in a Hyundai?

- It is not recommended to drive with the P0122 code as it can cause various drivability issues and potentially lead to further damage to the vehicle.

6. How can I repair OBDII code P0122 in my Hyundai?

- Repair options may include replacing the throttle position sensor, repairing damaged wiring or connectors, cleaning the throttle body, or reprogramming the sensor.

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

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to return.

8. Can a DIY enthusiast resolve OBDII code P0122 in a Hyundai?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to address the P0122 code by replacing the throttle position sensor or cleaning the throttle body.

9. How much does it cost to repair OBDII code P0122 at a Hyundai dealership or repair shop?

- The cost of repairing the P0122 code can vary depending on the root cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Are there any preventive measures to avoid OBDII code P0122 in a Hyundai?

- Regular maintenance, such as cleaning the throttle body, inspecting wiring connections, and replacing the throttle position sensor as needed, can help prevent the occurrence of code P0122.