AutoCodesMitsubishi – P0122 Mitsubishi

P0122 Mitsubishi Code - Throttle Position Sensor 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 Mitsubishi indicates Throttle Position Sensor 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 28,537
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0122 Mitsubishi 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 Mitsubishi - Throttle Position Sensor Circuit Low Input - AutoCodes.com
P0122 Mitsubishi Code - Throttle Position Sensor Circuit Low Input

What are the Possible Causes of the DTC P0122 Mitsubishi?

  • 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 Mitsubishi?

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 Mitsubishi 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.

Need more information about the P0122 Mitsubishi code?

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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 Mitsubishi Code

1. What does the OBD-II code P0122 mean on a Mitsubishi?

P0122 indicates a "Throttle Position Sensor Circuit Low Input," meaning the throttle position sensor (TPS) is reporting a voltage lower than the expected range to the engine control module (ECM).

2. What are the common symptoms of a P0122 code in a Mitsubishi?

Symptoms may include poor acceleration, rough idling, reduced fuel efficiency, engine stalling, and the check engine light being illuminated.

3. What causes a P0122 code in a Mitsubishi?

Common causes include a faulty throttle position sensor, damaged or corroded wiring, a bad ECM, or a sensor that is out of alignment.

4. Can I drive my Mitsubishi with a P0122 code?

While your car may still be drivable, it could experience reduced performance or stall unexpectedly. It’s best to address the issue as soon as possible to prevent further problems.

5. How do I diagnose the P0122 code in my Mitsubishi?

Start by inspecting the throttle position sensor and its wiring for damage or corrosion. Use a multimeter to check the sensor's voltage and compare it to the manufacturer’s specifications.

6. How do I fix a P0122 code in a Mitsubishi?

Repairs may involve replacing the throttle position sensor, repairing damaged wiring, cleaning corroded connectors, or recalibrating the sensor.

7. How much does it cost to fix the P0122 code on a Mitsubishi?

The cost varies depending on the repair, but replacing a throttle position sensor typically ranges from $100 to $300, including parts and labor.

8. Can a dirty throttle body cause a P0122 code in a Mitsubishi?

Yes, a dirty throttle body can cause improper sensor readings, which may trigger the P0122 code. Cleaning the throttle body may resolve the issue.

9. Will clearing the P0122 code fix the issue permanently?

No, clearing the code will temporarily turn off the check engine light but won’t fix the underlying problem. Proper diagnosis and repair are necessary.

10. Does a P0122 code affect fuel economy in a Mitsubishi?

Yes, a malfunctioning throttle position sensor can lead to improper air-fuel mixture calculations, reducing fuel efficiency.

Discuss the causes and fixes for P0122 Mitsubishi OBDII Code

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