AutoCodes – Generic – P1DFA

P1DFA Code - Actual Increase Of Engine Torque High

Quick Answer

The purpose of the diagnostic is to monitor if the Powertrain Control Module (PCM) executed the torque requested by the Transmission Control Module (TCM). Common causes include Faulty Powertrain Control Module (PCM), Faulty Transmission Control Module (TCM). 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: P1DFA indicates Actual Increase Of Engine Torque High.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Faulty Transmission Control Module (TCM).
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 1,604

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1DFA Description

The purpose of the diagnostic is to monitor if the Powertrain Control Module (PCM) executed the torque requested by the Transmission Control Module (TCM). This is determined by comparing the PCM's executed torque to the original torque requested by the TCM over the Controller Area Network (CAN) bus. These torque requests only occur during shift operations. This diagnostic checks for engine torque increase too high.

OBDII Code P1DFA - Actual Increase Of Engine Torque High - AutoCodes.com — P1DFA Code - Actual Increase Of Engine Torque High

What does this mean?

What are the Possible Causes of the DTC P1DFA?

Faulty Powertrain Control Module (PCM)
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1DFA?

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 P1DFA 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 P1DFA code?

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Need Help with the Code?

Get the P1DFA code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1DFA Chrysler — Actual Increase Of Engine Torque High
P1DFA Dodge — Actual Increase Of Engine Torque High
P1DFA Fiat — Actual Increase Of Engine Torque High
P1DFA Jeep — Actual Increase Of Engine Torque High

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 P1DFA Code

1. What are the common symptoms of OBDII code P1DFA (Actual Increase Of Engine Torque High)?

- Common symptoms include engine misfires, rough idling, reduced fuel efficiency, and a noticeable decrease in engine power.

2. What are the possible causes of OBDII code P1DFA?

- Possible causes of this code include a faulty throttle body, issues with the mass airflow sensor, vacuum leaks, or a problem with the engine control module.

3. How can I diagnose the OBDII code P1DFA?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code, conducting a visual inspection of the engine components, and performing tests on the throttle body and sensors.

4. Can driving with OBDII code P1DFA cause further damage to my vehicle?

- Continuing to drive with this code may lead to more severe engine problems over time, such as damage to the catalytic converter or other engine components.

5. What are some repair tips for fixing OBDII code P1DFA?

- Repair tips may include cleaning or replacing the throttle body, inspecting and cleaning the mass airflow sensor, checking for vacuum leaks, and ensuring proper functioning of the engine control module.

6. Is it safe to continue driving my vehicle with the OBDII code P1DFA?

- It is not recommended to drive your vehicle with this code present, as it can lead to poor engine performance and potentially cause further damage if left unresolved.

7. How much does it typically cost to repair OBDII code P1DFA?

- The cost of repairs for this code can vary depending on the underlying cause and the specific parts that need to be replaced. It is advisable to consult a professional mechanic for an accurate estimate.

8. Can I reset the OBDII code P1DFA myself, or do I need a mechanic?

- While you can reset the code yourself using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Are there any maintenance tasks I can perform to prevent OBDII code P1DFA from appearing?

- Regular maintenance, such as cleaning the throttle body, replacing air filters, and ensuring proper engine tune-up, can help prevent issues that may trigger this code.

10. Will OBDII code P1DFA cause my vehicle to fail an emissions test?

- Yes, if this code is present during an emissions test, it is likely to cause your vehicle to fail due to increased emissions and poor engine performance.