AutoCodes – GMC – P0D09 GMC

P0D09 GMC 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 GMC 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 876

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
Cost to Diagnose
FAQs
Comments
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Code P0D09 GMC 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 GMC - Battery Charging System Positive Contactor Stuck Open - AutoCodes.com — P0D09 GMC Code - Battery Charging System Positive Contactor Stuck Open

What does this mean?

What are the Possible Causes of the DTC P0D09 GMC?

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 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 P0D09 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.

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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 GMC Code

1. What are the common symptoms of OBDII code P0D09 GMC (Battery Charging System Positive Contactor Stuck Open)?

- Common symptoms include difficulty starting the vehicle, reduced battery charging, and potential warning lights related to the charging system.

2. What are the possible causes of OBDII code P0D09 GMC?

- The code may be triggered by a faulty positive contactor, wiring issues, a malfunctioning control module, or a problem with the battery charging system components.

3. How serious is the Battery Charging System Positive Contactor Stuck Open issue?

- This issue can lead to battery drain, potential stalling of the vehicle, and overall unreliable performance. It is recommended to address this issue promptly to avoid further damage.

4. Can I continue driving with the OBDII code P0D09 GMC present?

- It is not recommended to drive with this code present, as it can lead to further issues with the vehicle's electrical system and potentially leave you stranded due to a drained battery.

5. How can I diagnose the cause of OBDII code P0D09 GMC?

- Diagnosis typically involves inspecting the positive contactor, checking the wiring for damage, testing the control module, and ensuring proper functioning of the battery charging system.

6. Is it possible to repair the Battery Charging System Positive Contactor Stuck Open issue myself?

- While some experienced DIYers may be able to address this issue, it is recommended to have a professional mechanic perform the diagnosis and repair to ensure proper resolution.

7. What are some tips for preventing OBDII code P0D09 GMC from recurring?

- Regularly inspecting the battery charging system, keeping the electrical components clean and well-maintained, and addressing any issues promptly can help prevent this code from recurring.

8. How much does it typically cost to repair OBDII code P0D09 GMC?

- The cost of repair can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed. It's best to get a quote from a trusted mechanic.

9. Can OBDII code P0D09 GMC affect other systems in the vehicle?

- Yes, if left unresolved, this issue can potentially affect other electrical systems in the vehicle, leading to further complications and potential damage.

10. How long does it usually take to repair OBDII code P0D09 GMC?

- The repair time can vary depending on the exact cause of the issue, the availability of parts, and the workload of the repair shop. In some cases, the repair can be completed within a few hours, while more complex issues may take longer to resolve.