AutoCodes – GMC – P1E1A 2016 GMC Sierra

P1E1A 2016 GMC Sierra Code - Auxiliary Transmission Fluid Pump Control Module System Voltage High

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: P1E1A 2016 GMC Sierra indicates Auxiliary Transmission Fluid Pump Control Module System Voltage High.
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.

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Code Popularity 151

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 Jul 04, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E1A 2016 GMC Sierra 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. The hybrid powertrain control module and the motor control modules share the power inverter module ignition voltage circuit, battery voltage circuits and chassis earth.

OBDII Code P1E1A 2016 GMC Sierra - Auxiliary Transmission Fluid Pump Control Module System Voltage High - AutoCodes.com — P1E1A 2016 GMC Sierra Code - Auxiliary Transmission Fluid Pump Control Module System Voltage High

What does this mean?

What are the Possible Causes of the DTC P1E1A 2016 GMC Sierra?

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

How to Fix the DTC P1E1A 2016 GMC Sierra?

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 P1E1A 2016 GMC Sierra 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 P1E1A 2016 GMC Sierra Code

1. What does the OBDII code P1E1A mean on a 2016 GMC Sierra?

The P1E1A code indicates an issue where the Auxiliary Transmission Fluid Pump Control Module is detecting a system voltage that is too high.

2. What are the common symptoms of the P1E1A code in a 2016 GMC Sierra?

Symptoms may include a check engine light, erratic transmission operation, reduced fuel efficiency, or the transmission shifting abnormally.

3. What causes the P1E1A code to appear?

Common causes include a faulty auxiliary transmission fluid pump, a malfunctioning control module, wiring issues, or an overcharging alternator.

4. Can I drive my 2016 GMC Sierra with the P1E1A code active?

While it may still be drivable, ignoring this code can lead to further transmission issues or reduced performance. Itâ€™s best to address it promptly.

5. How do I diagnose the P1E1A code on my GMC Sierra?

Start by checking the battery voltage, inspecting the wiring and connectors for damage, and testing the auxiliary transmission fluid pump and its control module.

6. How much does it cost to fix the P1E1A code on a 2016 GMC Sierra?

Repair costs vary depending on the issue. Replacing the auxiliary transmission fluid pump might cost $200-$600, while fixing wiring or control module issues could vary widely.

7. Could a bad alternator cause the P1E1A code?

Yes, an overcharging alternator can supply excessively high voltage, triggering the P1E1A code.

8. Does the P1E1A code require reprogramming the control module?

In some cases, reprogramming or updating the control module software may be required after repairs to clear the code and restore proper function.

9. What tools are needed to troubleshoot the P1E1A code?

A multimeter for checking voltage, an OBDII scanner for reading and clearing codes, and wiring diagrams to trace electrical circuits are essential tools.

10. Can a weak battery cause the P1E1A code to appear?

While the code typically relates to high voltage, a weak battery causing voltage fluctuations could potentially contribute to triggering the code.