AutoCodes – Generic – P0AEB

P0AEB Code - Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage

Quick Answer

Hybrid/EV Battery Temperature Sensors are used to monitor the battery temperature. Common causes include Faulty Hybrid/EV Battery Assembly, Hybrid/EV Battery Assembly harness is open or shorted, Hybrid/EV Battery Assembly 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: P0AEB indicates Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage.
Common causes: Common causes include Faulty Hybrid/EV Battery Assembly, Hybrid/EV Battery Assembly harness is open or shorted, Hybrid/EV Battery Assembly 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,778

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 Mar 22, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0AEB Description

Hybrid/EV Battery Temperature Sensors are used to monitor the battery temperature. The non-serviceable battery temperature sensors are located within the battery sections. Two temperature sensors are located in each battery section. The temperature sensor is a variable resistor that measures the temperature of the battery cell group. The hybrid/EV interface control module supplies 5 V to the signal circuit and is a ground for the low reference circuit. The battery temperature sensor resistance changes with battery temperature. As the temperature decreases, the sensor resistance increases. As the temperature increases, the sensor resistance decreases.
Each Hybrid/EV Battery Interface Control Module communicates the temperature sensor values to the Hybrid/EV Powertrain Control Module via serial data.
The Hybrid/EV Powertrain Control Module uses the battery temperature sensors to determine the Hybrid/EV Battery Module temperature in order to control the battery cooling system operation.
The Diagnostic Trouble Code (DTC) will be set when the hybrid battery temperature sensor is less than -69°C (-92°F).

OBDII Code P0AEB - Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage - AutoCodes.com — P0AEB Code - Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0AEB?

Faulty Hybrid/EV Battery Assembly
Hybrid/EV Battery Assembly harness is open or shorted
Hybrid/EV Battery Assembly circuit poor electrical connection
Faulty Hybrid/EV Battery Interface Control Module

How to Fix the DTC P0AEB?

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 P0AEB 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.

Need more information about the P0AEB code?

Need more information on how to fix the P0AEB code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0AEB code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0AEB Buick — Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage
P0AEB Cadillac — Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage
P0AEB Chevrolet — Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage
P0AEB GMC — Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage
P0AEB Lexus — Hybrid Battery Temperature Sensor 'D' Circuit High
P0AEB Nissan — Hybrid Battery Temperature Sensor 'D' Circuit High
P0AEB Toyota — Hybrid Battery Temperature Sensor 'D' Circuit High

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.