AutoCodes – RAM – P0AD9 RAM

P0AD9 RAM Code - Hybrid Battery Positive Contactor Control Circuit Open

Quick Answer

The Battery Pack Control Module (BPCM) is contained within the High Voltage Battery Pack. Common causes include Faulty High Voltage Battery Pack, High Voltage Battery Pack harness is open or shorted, High Voltage Battery Pack 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 RAM indicates Hybrid Battery Positive Contactor Control Circuit Open.
Common causes: Common causes include Faulty High Voltage Battery Pack, High Voltage Battery Pack harness is open or shorted, High Voltage Battery Pack 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 155

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 Aug 05, 2024

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

The Battery Pack Control Module (BPCM) is contained within the High Voltage Battery Pack. The BPCM provides battery management and system functionality in conjunction with Cell Supervision Circuits (CSCs) that monitor and balance the battery cells. The CSCs are also located within the High Voltage Battery Pack. The BPCM is the High Voltage Interlock (HVIL) power source and communicates with the vehicle via CAN-C bus. The main functions of the BPCM are high-voltage bus and pre-charge contactor control, battery pack current, voltage and temperature sensing, CAN communication, fault detection, and reporting. The Diagnostic Trouble Code (DTC) will be set when the Battery Pack Control Module detects an opening on the main positive contactor control circuit. EVS lamp is illuminated but vehicle operation may be affected.

OBDII Code P0AD9 RAM - Hybrid Battery Positive Contactor Control Circuit Open - AutoCodes.com — P0AD9 RAM Code - Hybrid Battery Positive Contactor Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0AD9 RAM?

Faulty High Voltage Battery Pack
High Voltage Battery Pack harness is open or shorted
High Voltage Battery Pack circuit poor electrical connection

How to Fix the DTC P0AD9 RAM?

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 RAM 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.