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P1E4A Buick Code - Control Module Redundant Drive Motor 1 Speed Sensing Circuit

Quick Answer

The drive motor generator position sensor is monitored by the motor control module. Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted. 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: P1E4A Buick indicates Control Module Redundant Drive Motor 1 Speed Sensing Circuit.
Common causes: Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted.
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 805

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E4A Buick Description

The drive motor generator position sensor is monitored by the motor control module. The motor control module monitors the angular position, speed and direction of the drive motor generator based upon the signals of the resolver-type position sensor. The position sensor allows the motor control module to determine the exact position, speed and direction of the drive motor generator. The hybrid powertrain control module also calculates motor speed. This fault is handled inside the power inverter module, often referred to as the drive motor generator power inverter module, and no external circuits are involved.

OBDII Code P1E4A Buick - Control Module Redundant Drive Motor 1 Speed Sensing Circuit - AutoCodes.com — P1E4A Buick Code - Control Module Redundant Drive Motor 1 Speed Sensing Circuit

What does this mean?

What are the Possible Causes of the DTC P1E4A Buick?

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

How to Fix the DTC P1E4A 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 P1E4A 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 P1E4A Buick Code

1. What are the common symptoms of OBDII code P1E4A in a Buick related to the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- Common symptoms may include loss of power, erratic vehicle acceleration, and potential difficulty shifting gears.

2. What could be the possible causes of OBDII code P1E4A in a Buick for the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- Possible causes may include a faulty speed sensor, wiring issues, or a malfunctioning control module.

3. How can I diagnose OBDII code P1E4A in a Buick for the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- Diagnosis typically involves using a scan tool to retrieve the specific code, checking the speed sensor and its wiring for any damage or loose connections, and testing the control module.

4. Is it safe to continue driving my Buick with OBDII code P1E4A related to the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage and potential safety hazards.

5. What are some repair tips for resolving OBDII code P1E4A in a Buick for the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- Repair tips may include checking and repairing any damaged wiring, replacing the speed sensor if necessary, and resetting the control module after repairs.

6. Can a DIY enthusiast fix OBDII code P1E4A in a Buick related to the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- While some simple checks like inspecting wiring connections can be done by a DIY enthusiast, diagnosing and repairing the root cause of the code may require professional expertise.

7. How much does it typically cost to repair OBDII code P1E4A in a Buick for the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- Repair costs can vary depending on the specific issue causing the code, but it is advisable to budget for diagnostic fees, parts replacement, and labor costs.

8. Will resetting the OBDII system clear the P1E4A code related to the Control Module Redundant Drive Motor 1 Speed Sensing Circuit in a Buick?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

9. Can extreme weather conditions affect the occurrence of OBDII code P1E4A in a Buick for the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- Extreme weather conditions, such as excessive heat or moisture, can potentially exacerbate existing issues related to the speed sensor or wiring, leading to the code being triggered.

10. How long should it take to repair OBDII code P1E4A in a Buick for the Control Module Redundant Drive Motor 1 Speed Sensing Circuit?

- The repair duration can vary depending on the complexity of the issue, availability of parts, and the expertise of the technician. It is advisable to consult a professional for an accurate estimate.