AutoCodes – Chevrolet – P0AE9 Chevrolet

P0AE9 Chevrolet Code - Hybrid/EV Battery Temperature Sensor 4 Performance

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: P0AE9 Chevrolet indicates Hybrid/EV Battery Temperature Sensor 4 Performance.
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.

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Code Popularity 2,686

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
FAQs
Comments
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Code P0AE9 Chevrolet 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 difference between a single battery temperature sensor and an average of the other battery temperature sensors is greater than 25°C (45°F).

OBDII Code P0AE9 Chevrolet - Hybrid/EV Battery Temperature Sensor 4 Performance - AutoCodes.com — P0AE9 Chevrolet Code - Hybrid/EV Battery Temperature Sensor 4 Performance

What does this mean?

What are the Possible Causes of the DTC P0AE9 Chevrolet?

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 P0AE9 Chevrolet?

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 P0AE9 Chevrolet 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 P0AE9 Chevrolet code?

Need more information on how to fix the P0AE9 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0AE9 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0AE9 2014 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 4 Performance
P0AE9 2015 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 4 Performance
P0AE9 2016 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 4 Performance
P0AE9 2017 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 4 Performance
P0AE9 2018 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 4 Performance

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 P0AE9 Chevrolet Code

1. What are the common symptoms of OBDII code P0AE9 in a Chevrolet Hybrid/EV vehicle?

The common symptoms of code P0AE9 include reduced fuel efficiency, decreased battery performance, and potential illumination of the check engine light.

2. What could cause the OBDII code P0AE9 to trigger in a Chevrolet Hybrid/EV vehicle?

The code P0AE9 is typically triggered by a malfunction in Hybrid/EV Battery Temperature Sensor 4, which monitors the temperature of the hybrid or electric vehicle battery.

3. How can I diagnose the issue related to Hybrid/EV Battery Temperature Sensor 4 for code P0AE9 in a Chevrolet vehicle?

Diagnosing the issue involves using a diagnostic scanner to retrieve the specific code, checking the sensor's wiring and connections, and testing the sensor's functionality using a multimeter.

4. Can a DIY enthusiast repair or replace the Hybrid/EV Battery Temperature Sensor 4 associated with code P0AE9 in a Chevrolet Hybrid/EV vehicle?

While some DIY enthusiasts may attempt to replace the sensor themselves, it is recommended to seek assistance from a professional technician due to the complexity and sensitivity of the hybrid or electric vehicle system.

5. Are there any precautionary measures to take when dealing with OBDII code P0AE9 in a Chevrolet Hybrid/EV vehicle?

When working on the Hybrid/EV Battery Temperature Sensor 4 or related components, it is essential to disconnect the high-voltage system of the vehicle and follow all safety procedures outlined in the manufacturer's service manual.

6. Is it safe to continue driving a Chevrolet Hybrid/EV vehicle with the OBDII code P0AE9 present?

It is not recommended to continue driving the vehicle with the code P0AE9 active, as it can lead to further damage to the hybrid or electric vehicle system and potentially compromise safety and performance.

7. How can regular maintenance help prevent the occurrence of OBDII code P0AE9 in a Chevrolet Hybrid/EV vehicle?

Regular maintenance, including checking the battery temperature sensor and related components during scheduled service intervals, can help prevent issues that may trigger code P0AE9.

8. What are the potential consequences of ignoring OBDII code P0AE9 in a Chevrolet Hybrid/EV vehicle?

Ignoring the code P0AE9 can result in reduced fuel efficiency, decreased battery life, and potential damage to the hybrid or electric vehicle system, leading to costly repairs in the long run.

9. Are there any recalls or technical service bulletins related to OBDII code P0AE9 in Chevrolet Hybrid/EV vehicles?

It is advisable to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to code P0AE9 to address the issue promptly and accurately.

10. How can a professional technician reset the OBDII code P0AE9 in a Chevrolet Hybrid/EV vehicle after repairing the underlying issue?

A professional technician can reset the code using a diagnostic scanner or by disconnecting the vehicle's battery for a few minutes to clear the stored fault code from the system.