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Engine-Codes – Dodge – P0122 1999 Dodge Ram

P0122 1999 Dodge Ram Code - Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) in a 1999 Dodge Ram indicates a Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor terminals. 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 1999 Dodge Ram indicates Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor terminals.
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 11, 2024
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Code P0122 1999 Dodge Ram Description

The P0122 diagnostic trouble code (DTC) in a 1999 Dodge Ram indicates a Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input. This means that the Engine Control Module (ECM) has detected a lower than expected voltage signal from the throttle position sensor (TPS) or accelerator pedal position sensor (APP). The TPS is a crucial component that communicates the position of the throttle to the ECM, allowing it to adjust fuel delivery and ignition timing accordingly. When the TPS/APC circuit exhibits low input, it can lead to a variety of performance issues in the vehicle.

OBDII Code P0122 1999 Dodge Ram - Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input
P0122 1999 Dodge Ram Code - Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input

Common Causes of P0122 1999 Dodge Ram

  1. Faulty throttle position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination in the sensor terminals
  4. Malfunctioning accelerator pedal position sensor
  5. ECM software issues

Symptoms of P0122 1999 Dodge Ram

  1. Rough idling or stalling
  2. Hesitation or lack of response when accelerating
  3. Poor fuel efficiency
  4. Illumination of the Check Engine Light
  5. Reduced engine performance

How to Fix P0122 1999 Dodge Ram

  1. Diagnose the issue using a scan tool to confirm the P0122 code and check for any related codes.
  2. Inspect the throttle position sensor and accelerator pedal position sensor for any visible damage or signs of wear.
  3. Test the sensor circuit for continuity and proper voltage output using a multimeter.
  4. Replace the faulty sensor or repair any damaged wiring or connectors as necessary.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0122 1999 Dodge Ram

The typical repair costs for addressing a P0122 code in a 1999 Dodge Ram can range from $100 to $300, depending on the specific cause of the issue and the cost of parts. This estimate includes the cost of a new throttle position sensor or accelerator pedal position sensor, as well as any necessary labor charges. However, it is important to note that actual repair costs can vary based on factors such as location, vehicle make and model, and the mechanic's hourly labor rate. It is recommended to obtain quotes from local auto repair shops for a more accurate estimate.

What does this mean?

Tech Notes for P0122 1999 Dodge Ram









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When is the Code Detected?

The P0122 code will set if Throttle Position Sensor (TPS) voltage drops below .078 volts for the period of 0.48 seconds

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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 1999 Dodge Ram Code

1. What are the common symptoms of OBDII code P0122 in a 1999 Dodge Ram?

- Common symptoms include poor acceleration, stalling, rough idling, and decreased fuel efficiency.

2. What causes the Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input code (P0122) in a 1999 Dodge Ram?

- The most common causes are a faulty throttle position sensor, damaged wiring or connectors, or a problem with the accelerator pedal position sensor.

3. How can I diagnose the P0122 code in my 1999 Dodge Ram?

- You can use a scan tool to read the trouble code and monitor the throttle position sensor's voltage output while manually moving the throttle.

4. What are some repair tips for fixing OBDII code P0122 in a 1999 Dodge Ram?

- Check the throttle position sensor for proper operation, inspect the wiring and connectors for damage, and ensure there are no obstructions affecting the accelerator pedal's movement.

5. Can I drive my 1999 Dodge Ram with OBDII code P0122?

- It is not recommended to drive with the P0122 code as it can lead to further engine performance issues and potential safety hazards.

6. How much does it typically cost to repair the Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input code in a 1999 Dodge Ram?

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

7. Are there any DIY fixes for OBDII code P0122 in a 1999 Dodge Ram?

- If you have the necessary tools and expertise, you may be able to replace the throttle position sensor or repair damaged wiring yourself.

8. Will disconnecting the battery reset the P0122 trouble code in my 1999 Dodge Ram?

- Disconnecting the battery may temporarily clear the code, but it is not a permanent solution. It is recommended to diagnose and repair the underlying issue.

9. How long does it take to repair the Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input code in a 1999 Dodge Ram?

- The repair time can vary depending on the extent of the issue, but it typically takes around 1-2 hours for a professional mechanic to diagnose and fix the problem.

10. Can a faulty throttle position sensor cause other issues in a 1999 Dodge Ram besides triggering the P0122 trouble code?

- Yes, a faulty throttle position sensor can cause drivability issues, poor engine performance, and inaccurate fuel delivery, leading to further engine problems if left unresolved.

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