AutoCodes – Dodge – P2139 Dodge

P2139 Dodge Code - Throttle/Pedal Position Sensor/Switch 'D'/'F' Voltage Correlation

Quick Answer

The Accelerator Pedal Position (APP) sensor is an input to the Powertrain Control Module (PCM) and used to determine the amount of torque requested by the operator. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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: P2139 Dodge indicates Throttle/Pedal Position Sensor/Switch 'D'/'F' Voltage Correlation.
Common causes: Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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 3,310

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
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2139 Dodge Description

The Accelerator Pedal Position (APP) sensor is an input to the Powertrain Control Module (PCM) and used to determine the amount of torque requested by the operator. There are 2 pedal position signals in the sensor. Both signals, APP and APP2, have a positive slope (increasing angle, increasing voltage), but are offset and increase at different rates. The 2 pedal position signals make sure the PCM receives a correct input even if 1 signal has a concern. The PCM determines if a signal is incorrect by calculating where it should be, inferred from the other signals. If a concern is present with one of the circuits the other input is used. There are 2 reference voltage circuits, 2 signal return circuits, and 2 signal circuits (a total of 6 circuits and pins) between the PCM and the APP sensor assembly. The pedal position signal is converted to pedal travel degrees (rotary angle) by the PCM. The software converts these degrees to counts, which is the input to the torque based strategy. If the APP sensor inputs APP1 and APP2 disagree on the position of the accelerator pedal by more than an expected value, the P2138 is set.

OBDII Code P2139 Dodge - Throttle/Pedal Position Sensor/Switch 'D'/'F' Voltage Correlation - AutoCodes.com — P2139 Dodge Code - Throttle/Pedal Position Sensor/Switch 'D'/'F' Voltage Correlation

What does this mean?

What are the Possible Causes of the DTC P2139 Dodge?

Faulty Accelerator Pedal Position Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection
Faulty Electric Throttle Control Actuator

How to Fix the DTC P2139 Dodge?

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 P2139 Dodge 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 P2139 Dodge Code

1. What does OBDII code P2139 mean for a Dodge vehicle?

P2139 indicates a voltage correlation issue between the throttle/pedal position sensors 'D' and 'F', which affects the vehicle's ability to measure throttle input accurately.

2. What are common symptoms of code P2139 in Dodge vehicles?

Symptoms include reduced engine performance, poor throttle response, engine hesitation, or activation of limp mode.

3. What causes P2139 in Dodge vehicles?

Common causes include faulty throttle position sensors, damaged wiring or connectors, or issues with the electronic throttle control system.

4. Can a dirty throttle body cause P2139?

Yes, a dirty or contaminated throttle body can disrupt the sensors' readings and lead to the P2139 code.

5. How do I diagnose P2139 in my Dodge?

Inspect the throttle/pedal position sensors, wiring, and connectors for damage or corrosion, and perform voltage tests to confirm sensor functionality.

6. Can I drive my Dodge with P2139?

Driving with P2139 is not recommended as it can lead to reduced engine performance or sudden loss of acceleration.

7. How can I fix code P2139 in a Dodge?

Repair steps may include cleaning the throttle body, replacing faulty sensors, fixing damaged wiring, or recalibrating the throttle control system.

8. Does P2139 require sensor replacement?

Not always; it could be a wiring issue or a need for cleaning and recalibration. Proper diagnosis is essential.

9. Will clearing the code fix P2139 permanently?

Clearing the code without addressing the underlying issue will only provide a temporary solution, and the code is likely to return.

10. How much does it cost to repair P2139 in a Dodge?

Costs vary based on the cause but typically range from $100 to $500 for parts and labor, depending on whether sensors, wiring, or other components need replacement.