AutoCodes – Jeep – P0AA6 Jeep

P0AA6 Jeep Code - Hybrid/EV Battery Voltage System Isolation Lost

Quick Answer

The Battery Pack Control Module (BPCM) is contained within the High Voltage Battery Pack. Common causes include Service disconnect, Air Electric Heater (AEH), Air Electric Geater (AEH) high voltage harness. 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: P0AA6 Jeep indicates Hybrid/EV Battery Voltage System Isolation Lost.
Common causes: Common causes include Service disconnect, Air Electric Heater (AEH), Air Electric Geater (AEH) high voltage harness.
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 181

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 Jul 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0AA6 Jeep 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 BPCM detects an insolation fault on the vehicle side of the high-voltage system. EVS lamp is illuminated, and the READY indicator may be illuminated. Vehicle operation may be affected.

OBDII Code P0AA6 Jeep - Hybrid/EV Battery Voltage System Isolation Lost - AutoCodes.com — P0AA6 Jeep Code - Hybrid/EV Battery Voltage System Isolation Lost

What does this mean?

What are the Possible Causes of the DTC P0AA6 Jeep?

Service disconnect
Air Electric Heater (AEH)
Air Electric Geater (AEH) high voltage harness
Electric Air Compressor (EAC)
E-motor
E-motor high voltage harness
Power Inverter Module (PIM)
Power Inverter Module (PIM) high voltage harness
High Voltage Power Distribution Center (HVPDC)
High Voltage Battery Pack (HVBP)
On Board Charging Module (OBCM)
On Board Charging Module (OBCM) high voltage harness
Battery Coolant Heater (BCH)
Battery charger

How to Fix the DTC P0AA6 Jeep?

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 P0AA6 Jeep 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.