AutoCodes – Chevrolet – P0D09 Chevrolet

P0D09 Chevrolet Code - Battery Charging System Positive Contactor Stuck Open

Quick Answer

The hybrid/EV battery contains 4 high voltage contactors and 1 solid state relay (transistor). Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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: P0D09 Chevrolet indicates Battery Charging System Positive Contactor Stuck Open.
Common causes: Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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 1,929

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 27, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0D09 Chevrolet Description

The hybrid/EV battery contains 4 high voltage contactors and 1 solid state relay (transistor). The high voltage contactors and transistor allow the high voltage DC batteries to be connected to the vehicle or contain the high voltage DC within the hybrid/EV battery assembly. The 4 high voltage contactors consist of a main positive high voltage contactor, main negative high voltage contactor, charge positive high voltage contactor and a precharge negative high voltage contactor. The transistor controls the battery heater high voltage positive circuit. The contactors and transistor close and open in a specific sequence controlled by the hybrid/EV powertrain control module 2. The hybrid/EV powertrain control module 2 supplies voltage to the control circuit for each high voltage contactor/transistor. Ground is provided through a vehicle ground external of the high voltage battery.

OBDII Code P0D09 Chevrolet - Battery Charging System Positive Contactor Stuck Open - AutoCodes.com — P0D09 Chevrolet Code - Battery Charging System Positive Contactor Stuck Open

What does this mean?

What are the Possible Causes of the DTC P0D09 Chevrolet?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection

How to Fix the DTC P0D09 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 does this mean?

Code Tech Notes

There is a factory service bulletin for the 2016-2017 Volt. The factory recommends check for open fuse.
"This concern may be caused by an open 15 Amp fuse in the High Voltage Battery Disconnect Relay Assembly on the front part of the High Voltage Battery. If you experience one or more of the conditions above, check for an open 15A fuse in the Battery Disconnect Relay Assembly."

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0D09 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.

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Need Help with the Code?

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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 P0D09 Chevrolet Code

1. What are the common symptoms of OBDII code P0D09 in a Chevrolet related to the Battery Charging System Positive Contactor Stuck Open?

- Common symptoms may include issues with the vehicle's charging system, such as slow or incomplete battery charging, warning lights related to the battery or charging system, and potential difficulty starting the vehicle.

2. What are the possible causes of the Battery Charging System Positive Contactor Stuck Open in a Chevrolet?

- The issue may be caused by a faulty positive contactor, wiring issues, a malfunctioning control module, or a problem with the battery management system.

3. How can I diagnose the Battery Charging System Positive Contactor Stuck Open issue in my Chevrolet?

- Diagnosis typically involves using a diagnostic scan tool to retrieve the OBDII code P0D09, checking the positive contactor for proper operation, inspecting the wiring for any damage, and testing the control module.

4. Is it safe to continue driving my Chevrolet with OBDII code P0D09 related to the Battery Charging System Positive Contactor Stuck Open?

- It is not recommended to continue driving the vehicle with this issue, as it can lead to potential battery drain, starting problems, and other electrical issues. It's best to address the problem promptly.

5. How can I repair the Battery Charging System Positive Contactor Stuck Open problem in my Chevrolet?

- Repair options may include replacing the faulty positive contactor, repairing any damaged wiring, reprogramming the control module, or addressing any issues with the battery management system.

6. Can I fix the OBDII code P0D09 related to the Battery Charging System Positive Contactor Stuck Open myself, or do I need to take it to a professional mechanic?

- The complexity of the repair may vary depending on the underlying cause. While some DIY enthusiasts may be able to address simple issues like a loose connection, more complex problems may require the expertise of a professional mechanic.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P0D09 in my Chevrolet?

- Regularly inspecting the battery charging system, ensuring proper battery maintenance, and addressing any warning signs promptly can help prevent issues like the Battery Charging System Positive Contactor Stuck Open.

8. How much can I expect to pay for repairing OBDII code P0D09 in a Chevrolet due to the Battery Charging System Positive Contactor Stuck Open?

- Repair costs can vary depending on the extent of the issue, parts needed, and labor rates. It's advisable to obtain quotes from reputable mechanics or service centers for an accurate estimate.

9. Will resetting the OBD system clear the P0D09 code related to the Battery Charging System Positive Contactor Stuck Open in my Chevrolet?

- While resetting the OBD system may temporarily clear the code, it will not fix the underlying problem causing the code to appear. It's crucial to diagnose and address the root cause of the issue.

10. How long does it typically take to repair OBDII code P0D09 in a Chevrolet related to the Battery Charging System Positive Contactor Stuck Open?

- The repair time can vary based on the specific issue and repair process involved. Simple fixes like reconnecting a loose wire may take less time, while more complex repairs may require several hours or more.