AutoCodes – Ford – P1A03 Ford

P1A03 Ford Code - Drive Motor 'A' Shutdown Circuit

Quick Answer

The Transmission Control Module (TCM) continuously monitors the Motor Shutdown (MSDN) circuit and the Controlled Area Network (CAN) signal for an MSDN request from the Powertrain Control Module (PCM). Common causes include Motor Shutdown (MSDN) circuit open, Faulty Transmission Control Module (TCM), Faulty Powertrain Control Module (PCM). 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: P1A03 Ford indicates Drive Motor 'A' Shutdown Circuit.
Common causes: Common causes include Motor Shutdown (MSDN) circuit open, Faulty Transmission Control Module (TCM), Faulty Powertrain Control Module (PCM).
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 3,917

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 Feb 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A03 Ford Description

The Transmission Control Module (TCM) continuously monitors the Motor Shutdown (MSDN) circuit and the Controlled Area Network (CAN) signal for an MSDN request from the Powertrain Control Module (PCM). This code is set when the PCM requests traction motor shutdown through the CAN signal or if there is an MSDN circuit fault. The traction motor inverter will be disabled.

OBDII Code P1A03 Ford - Drive Motor 'A' Shutdown Circuit - AutoCodes.com — P1A03 Ford Code - Drive Motor 'A' Shutdown Circuit

What does this mean?

What are the Possible Causes of the DTC P1A03 Ford?

Motor Shutdown (MSDN) circuit open
Faulty Transmission Control Module (TCM)
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1A03 Ford?

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 P1A03 Ford 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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Need Help with the Code?

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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 P1A03 Ford Code

1. What are the common symptoms of OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- Common symptoms include loss of power, reduced acceleration, and the vehicle going into a limp mode.

2. What are the possible causes of OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- Possible causes include issues with the drive motor, malfunctioning drive motor control module, wiring issues, or a faulty sensor.

3. How can I diagnose the OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- Diagnosis typically involves conducting a thorough inspection of the drive motor, checking the drive motor control module, and inspecting the wiring and connectors for any damage.

4. Can I still drive my vehicle with OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- It is not recommended to drive the vehicle with this code as it can lead to further damage and potential safety issues.

5. How can I repair OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- Repair may involve replacing the drive motor, repairing or replacing the drive motor control module, fixing any wiring issues, or addressing sensor problems.

6. Are there any DIY tips for addressing OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- DIY tips include checking for loose connections, inspecting the drive motor for any visible damage, and ensuring all related components are securely in place.

7. How much does it cost to repair OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- Repair costs can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can resetting the OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit resolve the issue?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing the code to trigger.

9. Is it safe to continue driving if the OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit comes on intermittently?

- It is still not recommended to continue driving the vehicle as intermittent issues can escalate and lead to potential breakdowns or safety hazards.

10. How long does it take to repair OBDII code P1A03 Ford Drive Motor 'A' Shutdown Circuit?

- The repair time can vary based on the complexity of the issue and the availability of parts, but it may take a few hours to a full day to address the problem effectively.