P1E91 Buick Code - Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance
Quick Answer
The hybrid battery interface control module 1 will diagnose its own systems and determine when a fault condition is present. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module 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
- P1E91 Buick indicates Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance.
- Common causes
- Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module 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 P1E91 Buick Description
What are the Possible Causes of the DTC P1E91 Buick?
- Faulty Hybrid/EV Battery Interface Control Module
- Hybrid/EV Battery Interface Control Module harness is open or shorted
- Hybrid/EV Battery Interface Control Module circuit poor electrical connection
How to Fix the DTC P1E91 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 P1E91 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 P1E91 Buick Code
1. What does the OBDII code P1E91 mean on a Buick?
P1E91 indicates an issue with the Hybrid/EV Battery Interface Control Module 1, specifically related to its long-term memory performance.
2. What are the common symptoms of code P1E91 in a Buick?
Symptoms may include a check engine light, reduced hybrid/EV performance, limited vehicle power, or failure to switch between power modes.
3. What causes the P1E91 code to appear on a Buick?
The code can be triggered by corrupted memory in the control module, software glitches, low or unstable battery voltage, or a faulty control module.
4. Can I drive my Buick with the P1E91 code active?
Driving with this code is not recommended, as it may lead to reduced performance or potential damage to the hybrid/EV battery system.
5. How is the P1E91 code diagnosed?
A technician will use a scan tool to retrieve the code, check for related codes, inspect the control module connections, and test the system's voltage and software.
6. How do you fix the P1E91 code on a Buick?
Repairs may involve reprogramming or updating the control module software, repairing wiring issues, or replacing the Hybrid/EV Battery Interface Control Module 1 if faulty.
7. Can a dead 12V auxiliary battery cause the P1E91 code?
Yes, a weak or dead 12V battery can cause voltage inconsistencies that may trigger this code.
8. Does the P1E91 code require a software update?
In some cases, a software update for the Hybrid/EV Battery Interface Control Module may resolve the issue if it’s caused by a memory or programming error.
9. How much does it cost to repair the P1E91 code on a Buick?
Repair costs can vary but typically range from $150 to $800, depending on whether the issue involves software reprogramming or module replacement.
10. Can I clear the P1E91 code without fixing the issue?
Clearing the code without addressing the root cause will not resolve the problem, and the code is likely to return.
Discuss the causes and fixes for P1E91 Buick OBDII Code
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