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P2621 Dodge Code - Throttle Position Output Circuit Low

Quick Answer

The P2621 diagnostic trouble code (DTC) for Dodge vehicles specifically refers to the Throttle Position Output Circuit Low. Common causes include Faulty throttle position sensor (TPS), Damaged wiring or connectors in the TPS circuit, Malfunctioning 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
P2621 Dodge indicates Throttle Position Output Circuit Low.
Common causes
Common causes include Faulty throttle position sensor (TPS), Damaged wiring or connectors in the TPS circuit, Malfunctioning 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 16, 2024
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Code P2621 Dodge Description

The P2621 diagnostic trouble code (DTC) for Dodge vehicles specifically refers to the Throttle Position Output Circuit Low. This code indicates that the Engine Control Module (ECM) has detected a lower than expected voltage signal from the throttle position sensor (TPS) circuit. The TPS is a crucial component that monitors the position of the throttle valve and sends this information to the ECM to adjust fuel delivery and ignition timing accordingly. When the ECM receives a low voltage signal from the TPS circuit, it can lead to various performance issues in the vehicle.

OBDII Code P2621 Dodge - Throttle Position Output Circuit Low
P2621 Dodge Code - Throttle Position Output Circuit Low

Common Causes of P2621 Dodge

  1. Faulty throttle position sensor (TPS).
  2. Damaged wiring or connectors in the TPS circuit.
  3. Malfunctioning ECM.
  4. Issues with the throttle body.
  5. Corrosion or contamination in the TPS circuit.

Symptoms of P2621 Dodge

  1. Poor acceleration or hesitation when pressing the gas pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Reduced fuel efficiency and increased fuel consumption.
  4. Check Engine Light illuminated on the dashboard.
  5. Limited engine power or limp mode activation.

How to Fix P2621 Dodge

  1. Begin by conducting a thorough inspection of the TPS sensor, wiring, and connectors for any visible damage or corrosion.
  2. Test the TPS sensor using a multimeter to check for proper voltage output.
  3. If the TPS sensor is faulty, replace it with a new, OEM-quality sensor.
  4. Clear the DTC using a scan tool and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the ECM or throttle body.

Cost to Fix P2621 Dodge

The typical repair costs for addressing a P2621 Throttle Position Output Circuit Low code can vary depending on the specific cause of the issue and the labor rates in your area. On average, replacing a faulty TPS sensor can cost between $50 to $150 for the part, with additional labor costs ranging from $100 to $200. Overall, the total repair cost for this issue may range from $150 to $350, excluding any diagnostic fees or additional repairs that may be necessary. It is advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on your vehicle's make and model. Labor rates at auto repair shops typically range between $80 and $150 per hour, but may vary based on location and other factors.

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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 P2621 Dodge Code

1. What does the OBDII code P2621 mean on a Dodge vehicle?

P2621 indicates a problem with the Throttle Position Output Circuit Low, meaning the throttle position sensor (TPS) is sending a voltage signal lower than the expected range to the powertrain control module (PCM).

2. What are the common symptoms of a P2621 code in a Dodge?

Symptoms may include poor engine performance, rough idling, hesitation during acceleration, reduced fuel efficiency, and potentially the Check Engine Light being illuminated.

3. What causes the P2621 code to trigger in a Dodge?

Common causes include a faulty throttle position sensor, damaged or corroded wiring or connectors in the TPS circuit, or a malfunctioning PCM.

4. Can a dirty throttle body cause a P2621 code?

Yes, a dirty or clogged throttle body can interfere with the proper operation of the throttle position sensor and lead to a P2621 code.

5. How do you diagnose the P2621 code in a Dodge vehicle?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the TPS and its wiring for damage, and using a multimeter to test the TPS voltage and continuity.

6. Is it safe to drive a Dodge with a P2621 code?

Driving with this code is not recommended as it can lead to poor engine performance, safety concerns, and potential damage to other engine components.

7. How do you fix the P2621 code in a Dodge?

Repairs may include replacing the throttle position sensor, repairing or replacing damaged wiring, cleaning the throttle body, or reprogramming or replacing the PCM if needed.

8. What tools are needed to fix the P2621 code?

Tools may include an OBDII scanner, a multimeter, basic hand tools, and throttle body cleaner depending on the specific issue.

9. Can a failing PCM cause a P2621 code in a Dodge?

While rare, a failing PCM can cause this code if it is unable to properly interpret the throttle position sensor's signal.

10. How much does it cost to fix a P2621 code on a Dodge vehicle?

The repair cost varies but typically ranges from $100 to $300 for a throttle position sensor replacement, with additional costs if wiring repairs or PCM replacement are needed.

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