AutoCodes – Buick – P1E15 Buick

P1E15 Buick Code - Drive Motor 1 Control Module 5 Volt Reference 1 Circuit

Quick Answer

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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
P1E15 Buick indicates Drive Motor 1 Control Module 5 Volt Reference 1 Circuit.
Common causes
Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 865
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 23, 2020
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Code P1E15 Buick Description

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Two of the motor control modules operate their respective drive motor generator based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump motor. Each motor control module utilizes a 5 V reference power supply for internal circuit needs. This fault is handled inside the power inverter module and no external circuits are involved. The motor control modules and the hybrid powertrain control module are part of the power inverter module and are not serviced separately.
OBDII Code P1E15 Buick - Drive Motor 1 Control Module 5 Volt Reference 1 Circuit - AutoCodes.com
P1E15 Buick Code - Drive Motor 1 Control Module 5 Volt Reference 1 Circuit

What are the Possible Causes of the DTC P1E15 Buick?

  • Faulty Power Inverter Module
  • Power Inverter Module harness is open or shorted
  • Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1E15 Buick?

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 P1E15 Buick 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 P1E15 Buick Code

1. What does the OBDII code P1E15 mean on a Buick?

The P1E15 code indicates an issue with the Drive Motor 1 Control Module's 5-volt reference 1 circuit, which is critical for proper operation of the vehicle's hybrid or electric drive system.

2. What are the common symptoms of a P1E15 code on a Buick?

Symptoms may include a check engine light, reduced power mode, poor acceleration, and possible hybrid or electric system malfunctions.

3. What causes the P1E15 code to appear?

Common causes include a short or open circuit in the 5-volt reference wiring, a faulty Drive Motor 1 Control Module, or a sensor that uses the 5-volt reference signal.

4. Can a faulty sensor cause the P1E15 code?

Yes, a sensor that relies on the 5-volt reference signal can fail and cause the P1E15 code by disrupting the circuit.

5. How is the P1E15 code diagnosed?

A technician will use a scan tool to check for related codes, inspect the wiring and connectors for damage, and test the 5-volt reference circuit for proper voltage.

6. Can I drive my Buick with a P1E15 code?

Driving with this code is not recommended, as it can lead to reduced performance, safety concerns, and potential damage to the hybrid or electric drive system.

7. How do I fix the P1E15 code on my Buick?

Repairs may include fixing damaged wiring, replacing a faulty sensor, or replacing the Drive Motor 1 Control Module if it is determined to be defective.

8. How much does it cost to repair a P1E15 code on a Buick?

Costs vary depending on the issue, but repairs can range from $100 for simple wiring fixes to over $1,000 if the Drive Motor 1 Control Module needs replacement.

9. Can a dead battery cause the P1E15 code?

While unlikely, low voltage or a failing battery could potentially exacerbate electrical issues and trigger the code.

10. Will clearing the code fix the P1E15 issue?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.

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