AutoCodes – Chevrolet – P1E20 Chevrolet

P1E20 Chevrolet Code - Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage

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 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: P1E20 Chevrolet indicates Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage.
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 770

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 P1E20 Chevrolet 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 drive motor control module monitors its internal high voltage sensor for correct operation, 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 P1E20 Chevrolet - Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage - AutoCodes.com — P1E20 Chevrolet Code - Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1E20 Chevrolet?

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 P1E20 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 P1E20 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.

Need more information about the P1E20 Chevrolet code?

Need more information on how to fix the P1E20 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E20 Chevrolet 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 P1E20 Chevrolet Code

1. What are common symptoms of OBDII code P1E20 in a Chevrolet vehicle?

- Common symptoms include poor shifting performance, reduced fuel efficiency, and possible illumination of the check engine light.

2. What can cause the Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage error code P1E20?

- The code P1E20 in a Chevrolet may be triggered by a faulty auxiliary transmission fluid pump control module, issues with the hybrid/EV battery voltage sense circuit, or low battery voltage.

3. How serious is the OBDII code P1E20 in a Chevrolet vehicle?

- While the vehicle may still be operable, ignoring the code P1E20 can lead to further transmission problems and potentially affect the performance of the hybrid or electric components.

4. What are some DIY repair tips for addressing code P1E20 in a Chevrolet?

- DIY repair tips include checking the battery voltage, inspecting the wiring and connectors related to the hybrid/EV battery, and ensuring the auxiliary transmission fluid pump control module is functioning properly.

5. Can I continue driving my Chevrolet with the code P1E20 present?

- It is not recommended to continue driving the vehicle with the code P1E20 present, as it can lead to more severe transmission issues and potentially cause damage to the hybrid or electric components.

6. How can I reset the OBDII code P1E20 in my Chevrolet?

- Resetting the code P1E20 can be done using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, it is important to address the underlying issue causing the code before resetting it.

7. Is it safe to clear the P1E20 code and ignore it in my Chevrolet?

- Clearing the code without addressing the underlying issue is not recommended, as it may lead to more severe problems in the future. It is important to diagnose and repair the root cause of the code P1E20.

8. How much does it cost to repair OBDII code P1E20 in a Chevrolet?

- The cost of repairing the P1E20 code in a Chevrolet can vary depending on the underlying issue, parts needed, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can a faulty hybrid/EV battery cause the P1E20 code in a Chevrolet?

- Yes, a faulty hybrid/EV battery or issues with the voltage sense circuit related to the battery can trigger the P1E20 code in a Chevrolet.

10. Are there any recalls or technical service bulletins related to the P1E20 code in Chevrolet vehicles?

- It is advisable to check with Chevrolet or a certified dealership for any relevant recalls or technical service bulletins related to the P1E20 code in your specific vehicle model.