AutoCodes – Generic – P1D5F

P1D5F Code - Power Supply 2 Circuit Fault

Quick Answer

This diagnostic checks for the electrical faults of the power supply to the Transmission Control Module (TCM). Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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: P1D5F indicates Power Supply 2 Circuit Fault.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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 1,035

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1D5F Description

This diagnostic checks for the electrical faults of the power supply to the Transmission Control Module (TCM). The supply is provided to TCM via three different input pins named PWRSPLYVS1, PWRSPLYVS2 and PWRSPLYVS3. The diagnostic detects if each power supply input is shorted to ground or has an open circuit fault by continuously measuring its voltage value. When each of the voltage values is less than its threshold, then that diagnostic will set a fault in the TCM.

OBDII Code P1D5F - Power Supply 2 Circuit Fault - AutoCodes.com — P1D5F Code - Power Supply 2 Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P1D5F?

Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection

How to Fix the DTC P1D5F?

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 P1D5F 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 P1D5F code?

Need more information on how to fix the P1D5F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1D5F code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1D5F Chrysler — Power Supply 2 Circuit Fault
P1D5F Dodge — Power Supply 2 Circuit Fault
P1D5F Fiat — Power Supply 2 Circuit Fault
P1D5F Jeep — Power Supply 2 Circuit Fault

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 P1D5F Code

1. What does the OBDII code P1D5F mean?

P1D5F refers to a Power Supply 2 Circuit Fault, typically indicating an issue with the secondary power supply circuit in the vehicleâ€™s electrical system.

2. What are the common symptoms of code P1D5F?

Symptoms may include the check engine light turning on, electrical components malfunctioning, dim or flickering lights, or starting issues.

3. What causes the P1D5F code to appear?

Common causes include a faulty power supply relay, damaged wiring or connections in the circuit, a dead battery, or a malfunctioning control module.

4. Can I still drive my car with a P1D5F code?

While it may be possible to drive the vehicle, itâ€™s not recommended as electrical failures could worsen and lead to further damage or safety risks.

5. How do you diagnose a P1D5F code?

Diagnosis involves scanning the vehicle with an OBDII tool, checking the power supply relay, inspecting wiring for damage, and testing the voltage of the secondary circuit.

6. What repairs typically fix the P1D5F code?

Repairs may include replacing the power supply relay, repairing damaged wiring, securing loose connections, or reprogramming/fixing the control module.

7. Can a weak battery cause the P1D5F code?

Yes, a weak or failing battery can cause insufficient power supply, triggering the P1D5F code.

8. How much does it cost to fix the P1D5F code?

Repair costs can vary depending on the issue, ranging from $50 for basic wiring repairs to over $500 if a control module replacement is needed.

9. Can a blown fuse cause the P1D5F code?

Yes, a blown fuse in the power supply circuit can disrupt functionality and trigger the P1D5F code.

10. Do I need a professional to fix the P1D5F code?

While basic checks like inspecting fuses or connections can be done at home, diagnosing and repairing electrical circuits often requires professional assistance.