P1E5C Cadillac Code - Hybrid/Electric Vehicle Battery 49 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
- P1E5C Cadillac indicates Hybrid/Electric Vehicle Battery 49 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 P1E5C 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 P1E5C Cadillac?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1E5C 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 P1E5C 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 P1E5C Cadillac Code
1. What does the OBDII code P1E5C mean on a Cadillac?
P1E5C indicates an issue with the Hybrid/Electric Vehicle Battery 49 Circuit, which typically relates to a fault in the battery pack or its associated wiring and communication.
2. What are the common symptoms of code P1E5C on a Cadillac?
Symptoms may include the check engine light or service hybrid system warning, reduced electric range, diminished performance, or the vehicle entering a limp mode.
3. What causes the P1E5C code to appear on a Cadillac?
Common causes include a faulty battery module, damaged wiring or connectors in the battery circuit, or issues with the battery management system.
4. Can I drive my Cadillac with the P1E5C code?
Driving with this code is not recommended, as it may lead to reduced performance or further damage to the hybrid/electric battery system.
5. How do you diagnose the P1E5C code on a Cadillac?
Diagnosis involves scanning for trouble codes, inspecting battery wiring and connectors, testing the affected battery module, and checking the battery management system for faults.
6. What repairs are needed to fix the P1E5C code?
Repairs may include replacing a defective battery module, repairing damaged wiring or connectors, or reprogramming/updating the battery management system.
7. How much does it cost to fix the P1E5C code on a Cadillac?
Repair costs vary based on the issue, but replacing a battery module can range from $500 to $2,000, while wiring repairs are generally less expensive.
8. Can a weak 12-volt battery cause the P1E5C code?
While unlikely, a weak or failing 12-volt battery can sometimes affect the hybrid system and should be tested as part of the diagnostic process.
9. Does the P1E5C code mean the entire hybrid battery needs replacement?
Not necessarily; the issue may be isolated to a single module or circuit, which can often be repaired without replacing the entire battery pack.
10. Can a software update resolve the P1E5C code?
In some cases, a software update for the battery management system may resolve the issue if it's caused by a programming error.
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