AutoCodes – Generic – P1A54

P1A54 Code - Drive Motor 2 Control Module Read Only Memory

Quick Answer

The drive motor control modules are internal to the Power Inverter Module, often referred to as the drive motor-generator Power Inverter Module, and are not serviced separately. Common causes include Faulty Power Inverter Module (PIM), Power Inverter Module (PIM) harness is open or shorted, Power Inverter Module (PIM) 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: P1A54 indicates Drive Motor 2 Control Module Read Only Memory.
Common causes: Common causes include Faulty Power Inverter Module (PIM), Power Inverter Module (PIM) harness is open or shorted, Power Inverter Module (PIM) 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 980

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 Aug 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A54 Description

The drive motor control modules are internal to the Power Inverter Module, often referred to as the drive motor-generator Power Inverter Module, and are not serviced separately. This fault is handled inside the drive motor control modules and no external circuits are involved. The Diagnostic Trouble Code (DTC) will set when the Power Inverter Module has detected an internal malfunction, or a service module has been installed but not yet programmed.

OBDII Code P1A54 - Drive Motor 2 Control Module Read Only Memory - AutoCodes.com — P1A54 Code - Drive Motor 2 Control Module Read Only Memory

What does this mean?

What are the Possible Causes of the DTC P1A54?

Faulty Power Inverter Module (PIM)
Power Inverter Module (PIM) harness is open or shorted
Power Inverter Module (PIM) circuit poor electrical connection

How to Fix the DTC P1A54?

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 P1A54 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 P1A54 code?

Need more information on how to fix the P1A54 code? Get Access to Factory Service Manuals

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Get the P1A54 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1A54 Buick — Drive Motor 2 Control Module Read Only Memory
P1A54 Cadillac — Drive Motor 2 Control Module Read Only Memory
P1A54 Chevrolet — Drive Motor 2 Control Module Read Only Memory
P1A54 GMC — Drive Motor 2 Control Module Read Only Memory

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 P1A54 Code

1. What are common symptoms of OBDII code P1A54 Drive Motor 2 Control Module Read Only Memory?

The common symptoms include the check engine light illuminating, reduced engine performance, and potential issues with the drive motor.

2. What are the possible causes of OBDII code P1A54?

Possible causes include a faulty drive motor control module, issues with the Read Only Memory (ROM), wiring or connection problems, or software issues.

3. How can I diagnose the cause of OBDII code P1A54?

Diagnosis typically involves using an OBDII scanner to retrieve the code, checking the drive motor control module, inspecting wiring and connections, and potentially reprogramming the module.

4. Can I still drive my vehicle with OBDII code P1A54 present?

It is not recommended to drive the vehicle with code P1A54 present, as it can lead to further damage to the drive motor or other components.

5. How can I repair OBDII code P1A54 Drive Motor 2 Control Module Read Only Memory?

Repair options may include replacing the drive motor control module, addressing wiring issues, reprogramming the module, or seeking assistance from a qualified mechanic.

6. Is it safe to clear the OBDII code P1A54 Drive Motor 2 Control Module Read Only Memory without addressing the underlying issue?

Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the problem will likely reoccur and could potentially cause more severe issues with the drive motor.

7. Can a DIY enthusiast fix OBDII code P1A54 at home?

While some basic troubleshooting steps can be taken at home, fixing OBDII code P1A54 may require specialized tools and knowledge, so it is recommended to consult a professional mechanic for proper diagnosis and repair.

8. How much does it typically cost to repair OBDII code P1A54 Drive Motor 2 Control Module Read Only Memory?

The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Are there any preventive measures to avoid OBDII code P1A54 in the future?

Regular maintenance of the drive motor system, checking for any wiring issues, and promptly addressing any warning lights or unusual symptoms can help prevent OBDII code P1A54 from occurring in the future.

10. Can OBDII code P1A54 cause damage to other vehicle components if left unresolved?

Yes, if left unresolved, OBDII code P1A54 can potentially cause further damage to the drive motor and other related components, leading to more extensive and costly repairs.