AutoCodesChevrolet – P1A54 Chevrolet

P1A54 Chevrolet 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 Chevrolet 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 823
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 03, 2020
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Code P1A54 Chevrolet 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 Chevrolet - Drive Motor 2 Control Module Read Only Memory - AutoCodes.com
P1A54 Chevrolet Code - Drive Motor 2 Control Module Read Only Memory

What are the Possible Causes of the DTC P1A54 Chevrolet?

  • 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 Chevrolet?

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 Chevrolet 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 P1A54 Chevrolet Code

1. What does the OBDII code P1A54 mean on a Chevrolet?

P1A54 indicates an issue with the Drive Motor 2 Control Module's Read Only Memory (ROM), which is part of the hybrid or electric drive system.

2. What are the common symptoms of a P1A54 code in a Chevrolet?

Symptoms may include illuminated warning lights (e.g., MIL or EV system light), reduced power mode, decreased vehicle performance, or drivability issues.

3. What causes the P1A54 code to appear in a Chevrolet?

The code is typically caused by a fault in the Drive Motor 2 Control Module's ROM, software corruption, electrical issues, or a failure in the control module itself.

4. Can the P1A54 code cause damage to my vehicle if not repaired?

If left unaddressed, the code could lead to further issues with the hybrid or electric drive system, reduced performance, or complete failure of the affected motor.

5. How is the P1A54 code diagnosed on a Chevrolet?

A technician will use a scan tool to retrieve the code, inspect the Drive Motor 2 Control Module, check for software updates, and test the electrical connections and wiring.

6. Can I drive my Chevrolet with a P1A54 code?

While the vehicle may still operate, it is not recommended to drive extensively as reduced power or drivability issues could pose safety risks.

7. How do you fix the P1A54 code on a Chevrolet?

Repairs may include reprogramming or updating the control module's software, checking and repairing wiring or connections, or replacing the Drive Motor 2 Control Module if it is defective.

8. How much does it cost to repair a P1A54 code on a Chevrolet?

Repair costs vary depending on the issue, but reprogramming or software updates may cost $100–$300, while replacing the control module can range from $500–$1,500.

9. Is the P1A54 code covered under warranty for a Chevrolet?

If your vehicle is still under the powertrain or hybrid system warranty, the repair may be covered. Check with your dealership for warranty details.

10. Can a software update fix the P1A54 code on my Chevrolet?

Yes, if the issue is related to corrupted software in the Drive Motor 2 Control Module, a software update or reprogramming may resolve the problem.

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