P1E52 Cadillac Code - Hybrid/Electric Vehicle Battery 39 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
- P1E52 Cadillac indicates Hybrid/Electric Vehicle Battery 39 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 P1E52 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 P1E52 Cadillac?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1E52 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 P1E52 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 P1E52 Cadillac Code
What does the OBDII code P1E52 mean on a Cadillac?
The code P1E52 indicates an issue with the Hybrid/Electric Vehicle Battery 39 Circuit, which relates to a specific sensor or battery module in the vehicle's hybrid or electric system.
What are the common symptoms of the P1E52 code?
Common symptoms include a check engine light, reduced hybrid/electric vehicle performance, poor fuel efficiency, or the vehicle entering a "limp mode."
What causes the P1E52 code on a Cadillac?
The most common causes are a faulty battery module, damaged wiring or connectors in the circuit, or an issue with the battery control module.
Can I drive my Cadillac with the P1E52 code?
Driving with this code is not recommended, as it can lead to reduced performance and may cause further damage to the vehicle's hybrid or electric systems.
How is the P1E52 code diagnosed?
A technician will use a diagnostic scanner to confirm the code, inspect the battery module and its circuit, check for damaged wiring or connections, and test the battery control module.
What repairs can fix the P1E52 code?
Repairs may include replacing the faulty battery module, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the battery control module.
How much does it cost to fix the P1E52 code on a Cadillac?
Repair costs vary but can range from $200 for minor wiring repairs to over $1,000 if a battery module or control module needs replacement.
Can a weak 12V battery trigger the P1E52 code?
A weak or failing 12V auxiliary battery can sometimes cause hybrid system issues, but this specific code typically pertains to the high-voltage battery system.
Does the P1E52 code require reprogramming the battery control module?
In some cases, reprogramming or updating the battery control module software may be necessary to resolve the issue.
Is the P1E52 code common in all Cadillac hybrid/electric models?
This code is more common in certain Cadillac hybrid or plug-in electric vehicles, depending on their battery configurations and control systems.
Discuss the causes and fixes for P1E52 Cadillac OBDII Code
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