AutoCodes – GMC – P1E4A GMC

P1E4A GMC 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 GMC 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 736

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC P1E4A GMC?

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 GMC?

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 GMC 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 P1E4A GMC code?

Need more information on how to fix the P1E4A GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E4A GMC code diagnosed by a professional: Find a repair shop in your area

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 GMC Code

What does the OBDII code P1E4A mean on a GMC vehicle?

1. The code P1E4A indicates an issue with the Control Module Redundant Drive Motor 1 Speed Sensing Circuit, which monitors the speed of one of the drive motors in the vehicle's electric or hybrid system. 2.

What are the common symptoms of the P1E4A code?

Symptoms may include the illumination of the check engine light, reduced vehicle performance, limited power mode activation, or unusual noises from the drive motor system. 3.

What causes the P1E4A code to appear?

Common causes include a faulty speed sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning drive motor control module, or software errors in the control system. 4.

Can the P1E4A code cause drivability issues?

Yes, it may cause reduced power mode or limit the vehicle's performance, especially in electric or hybrid vehicles relying on the affected motor. 5.

How is the P1E4A code diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connections for damage, test the speed sensor, and check for updates or faults in the control module. 6.

Can I drive with the P1E4A code active?

Driving with this code is not recommended as it may lead to further damage to the motor system or reduced safety and performance. 7.

How do you fix the P1E4A code on a GMC vehicle?

Repairs may include replacing the faulty speed sensor, repairing damaged wiring or connectors, reprogramming the control module, or replacing the module if necessary. 8.

Is the P1E4A code related to hybrid or electric GMC models?

Yes, this code is typically associated with hybrid or electric GMC vehicles that use drive motors and advanced control systems. 9.

How much does it cost to repair the P1E4A code?

Repair costs can vary widely, ranging from $150 to $1,000 or more, depending on whether the fix involves sensor replacement, wiring repairs, or module replacement. 10.

Can a software update fix the P1E4A code?

In some cases, a software update for the control module can resolve the issue if the problem is related to a programming error or outdated firmware.