P1E86 Cadillac Code - Hybrid/Electric Vehicle Battery 91 Circuit
Quick Answer
The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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
- P1E86 Cadillac indicates Hybrid/Electric Vehicle Battery 91 Circuit.
- Common causes
- Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
- 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 P1E86 Cadillac Description
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.
What are the Possible Causes of the DTC P1E86 Cadillac?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1E86 Cadillac?
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 P1E86 Cadillac 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 P1E86 Cadillac Code
What does the OBDII code P1E86 mean for a Cadillac?
P1E86 indicates an issue with the Hybrid/Electric Vehicle Battery 91 Circuit, which is related to the battery management system monitoring the specific circuit's performance.
What are the common symptoms of the P1E86 code in a Cadillac?
Symptoms can include a check engine light, reduced fuel efficiency, limited electric drive functionality, or warnings related to the hybrid system.
What causes the P1E86 code to appear on a Cadillac?
The code can be triggered by faulty wiring, a damaged battery module, a malfunctioning battery management system, or corrosion in the circuit connections.
Can I drive my Cadillac with the P1E86 code active?
While the vehicle may still be operable, driving with this code can lead to reduced performance and potential damage to the hybrid battery system. It's best to address the issue promptly.
How is the P1E86 code diagnosed?
Technicians use a diagnostic scanner to read the code, inspect the battery wiring and connections, and test the battery modules for proper function.
How can the P1E86 code be fixed?
Repairs may include replacing damaged wiring, cleaning corroded connections, or replacing faulty battery modules or components in the battery management system.
How much does it cost to fix the P1E86 code on a Cadillac?
Repair costs vary depending on the severity of the issue but can range from $200 to $1,500, depending on whether wiring repairs or battery module replacements are needed.
Can a weak 12V battery cause the P1E86 code in a Cadillac?
While unlikely, a weak or failing 12V battery can sometimes impact the hybrid system's operation, so it’s worth checking as part of the diagnosis.
How can I prevent the P1E86 code from appearing on my Cadillac?
Regular maintenance, including inspecting wiring for damage, ensuring connections are clean, and monitoring battery health, can help prevent this code.
Do I need to reprogram the battery management system after fixing the P1E86 code?
In some cases, reprogramming or resetting the battery management system may be necessary to ensure proper functionality after repairs.
Discuss the causes and fixes for P1E86 Cadillac OBDII Code
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