P1AE6 Buick Code - Battery Energy Control Module Hybrid/EV Battery Voltage Isolation Sensor Circuit
Quick Answer
The Battery Energy Control Module will diagnose its own systems and determine when a fault condition is present. Common causes include Faulty Hybrid/EV Battery Pack, Hybrid/EV Battery Pack harness is open or shorted, Hybrid/EV 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
- P1AE6 Buick indicates Battery Energy Control Module Hybrid/EV Battery Voltage Isolation Sensor Circuit.
- Common causes
- Common causes include Faulty Hybrid/EV Battery Pack, Hybrid/EV Battery Pack harness is open or shorted, Hybrid/EV 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.
Code P1AE6 Buick Description
The vehicle is equipped with a high voltage isolation monitor feature. The purpose of the high voltage isolation circuit is to test the resistance between the high voltage positive and negative direct current (DC) bus and chassis ground. The battery energy control module only runs this test when the ignition transitions from ON to OFF and the high voltage contactor relays have opened. The battery energy control module has an internal isolation sensor that measures the resistance between the high voltage DC positive and negative bus and chassis ground. The battery energy control module runs an internal self check of this sensor circuit. The battery energy control module sends an AC signal over the DC bus and monitors its amplitude. A low amplitude or collapsed return signal indicates a loss of resistance to chassis ground and a loss of isolation will be indicated by the hybrid powertrain control module 2. Because this diagnostic runs after system power down, the diagnostic status does not get reported until the next key cycle.
What are the Possible Causes of the DTC P1AE6 Buick?
- Faulty Hybrid/EV Battery Pack
- Hybrid/EV Battery Pack harness is open or shorted
- Hybrid/EV Battery Pack circuit poor electrical connection
How to Fix the DTC P1AE6 Buick?
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 P1AE6 Buick 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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Frequently Asked Questions about P1AE6 Buick Code
1. What does the OBDII code P1AE6 mean for a Buick?
The code P1AE6 indicates an issue with the Battery Energy Control Module detecting a problem in the Hybrid/EV battery voltage isolation sensor circuit.
2. What are common symptoms of the P1AE6 code in a Buick?
Symptoms may include an illuminated check engine light, reduced hybrid/EV performance, issues with battery charging, and the vehicle possibly entering limp mode.
3. What causes the P1AE6 code to appear?
The most common causes are a faulty battery voltage isolation sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning Battery Energy Control Module.
4. Can I drive my Buick with the P1AE6 code active?
It is not recommended to drive the vehicle for extended periods, as the hybrid/EV system may not function properly and could cause further damage to the battery or control module.
5. How is the P1AE6 code diagnosed in a Buick?
A technician will use a scan tool to confirm the code, inspect the wiring and connectors in the sensor circuit, and test the voltage isolation sensor and Battery Energy Control Module for proper operation.
6. How do you fix the P1AE6 code on a Buick?
Repairs may involve replacing a faulty voltage isolation sensor, repairing damaged wiring or connectors, or, in rare cases, replacing the Battery Energy Control Module.
7. How much does it cost to fix the P1AE6 code on a Buick?
The repair cost can vary depending on the issue, ranging from $100 for wiring repairs to $1,000 or more if the Battery Energy Control Module needs replacement.
8. Can a weak 12V battery cause the P1AE6 code?
While unlikely, a weak 12V battery can sometimes cause hybrid/EV system errors. It should be tested as part of the diagnostic process.
9. Will clearing the P1AE6 code fix the issue?
Clearing the code may temporarily remove the warning light, but the underlying issue must be addressed to prevent the code from returning.
10. Is the P1AE6 code specific to Buick vehicles?
The P1AE6 code is not exclusive to Buick but is more commonly associated with GM hybrid and EV systems, including certain Buick models.
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