AutoCodes – GMC – P0AD9 GMC

P0AD9 GMC Code - Hybrid/EV Battery Positive Contactor Control Circuit

Quick Answer

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. 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: P0AD9 GMC indicates Hybrid/EV Battery Positive Contactor Control Circuit.
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 882

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 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0AD9 GMC Description

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. The high voltage contactors and transistors allow the high voltage DC batteries to be connected to the vehicle or safely contain the high voltage DC within the hybrid/EV battery assembly. The 5 high voltage contactors consist of a main positive high voltage contactor, main negative high voltage contactor, charge positive high voltage contactor, charge negative high voltage contactor and multi-function high voltage contactor. The 2 transistors consist of the precharge transistor and heater transistor. The contactors and transistors 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 the high voltage contactors/transistors. Ground is provided through the case ground.

OBDII Code P0AD9 GMC - Hybrid/EV Battery Positive Contactor Control Circuit - AutoCodes.com — P0AD9 GMC Code - Hybrid/EV Battery Positive Contactor Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0AD9 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 P0AD9 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 P0AD9 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 P0AD9 GMC Code

1. What are the common symptoms of OBDII code P0AD9 in a GMC related to the Hybrid/EV Battery Positive Contactor Control Circuit?

- Common symptoms include the hybrid or electric vehicle not starting, loss of power, illuminated warning lights on the dashboard, and potential issues with the hybrid battery.

2. What are the possible causes of OBDII code P0AD9 in a GMC related to the Hybrid/EV Battery Positive Contactor Control Circuit?

- Possible causes include a faulty positive contactor, damaged wiring or connectors in the control circuit, issues with the hybrid battery, or a malfunction in the hybrid battery control module.

3. How can I diagnose OBDII code P0AD9 in a GMC related to the Hybrid/EV Battery Positive Contactor Control Circuit?

- Diagnosis typically involves using a scan tool to retrieve the specific code, performing visual inspections of the wiring and connectors, testing the positive contactor for functionality, and checking the hybrid battery system for any issues.

4. Can driving with OBDII code P0AD9 in a GMC related to the Hybrid/EV Battery Positive Contactor Control Circuit cause further damage?

- Continued driving with this code present can potentially lead to further issues with the hybrid or electric vehicle's battery system, resulting in more significant repair costs over time.

5. Is it safe to continue driving my GMC with OBDII code P0AD9 related to the Hybrid/EV Battery Positive Contactor Control Circuit?

- It is not recommended to drive the vehicle with this code present, as it may lead to unexpected power loss or other safety concerns. It is best to have the issue diagnosed and repaired as soon as possible.

6. How can I repair OBDII code P0AD9 in a GMC related to the Hybrid/EV Battery Positive Contactor Control Circuit?

- Repairing this code typically involves replacing the faulty positive contactor, repairing any damaged wiring or connectors, addressing issues with the hybrid battery, or recalibrating the hybrid battery control module as needed.

7. Are there any preventive maintenance tips to avoid OBDII code P0AD9 related to the Hybrid/EV Battery Positive Contactor Control Circuit?

- Regularly inspecting the hybrid or electric vehicle's battery system, following the manufacturer's recommended maintenance schedule, and addressing any warning signs promptly can help prevent issues leading to this code.

8. Can I reset OBDII code P0AD9 in a GMC related to the Hybrid/EV Battery Positive Contactor Control Circuit myself?

- While you can clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring. If you are unsure about the repair process, it is recommended to seek professional assistance.

9. How much does it typically cost to repair OBDII code P0AD9 related to the Hybrid/EV Battery Positive Contactor Control Circuit in a GMC?

- The cost of repair can vary depending on the specific cause of the code and the extent of the repairs needed. It is advisable to obtain a diagnostic from a qualified technician to determine an accurate repair cost.

10. Can a DIY enthusiast with automotive experience repair OBDII code P0AD9 related to the Hybrid/EV Battery Positive Contactor Control Circuit in a GMC?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address simpler issues related to this code, such as checking and replacing fuses or relays. However, more complex repairs involving the hybrid battery system may require professional expertise.