AutoCodes – Buick – P1EA6 Buick

P1EA6 Buick Code - 14 Volt Power Module Cooling Fan Control Circuit

Quick Answer

The 14 V power module cooling fan blows air through the 14 V power module to control the temperature of the 14 V power module. Common causes include Faulty 14 Volt Power Module, 14 Volt Power Module harness is open or shorted, 14 Volt Power 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: P1EA6 Buick indicates 14 Volt Power Module Cooling Fan Control Circuit.
Common causes: Common causes include Faulty 14 Volt Power Module, 14 Volt Power Module harness is open or shorted, 14 Volt Power 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.

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Code Popularity 776

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1EA6 Buick Description

The 14 V power module cooling fan blows air through the 14 V power module to control the temperature of the 14 V power module. The fan is controlled with a pulse-width modulated signal sent from the hybrid/EV powertrain control module 2 to the 14 V power module fan. The longer the duty cycle on the signal the higher the fan speed. Maximum fan speed is 3900 RPM. An enable signal from the hybrid/EV powertrain control module 2 to the 14 V power module fan provides overall control of the fan. When this circuit is high, the fan can operate. The 14 V power module fan provides a hard-wired pulse-width modulated feedback signal to the hybrid/EV powertrain control module 2. During normal operation, this feedback signal provides fan speed information. The 14 V power module fan has some self-diagnostic capability. If it determines there is an internal fault it provides this information on this same feedback circuit instead of speed information.

OBDII Code P1EA6 Buick - 14 Volt Power Module Cooling Fan Control Circuit - AutoCodes.com — P1EA6 Buick Code - 14 Volt Power Module Cooling Fan Control Circuit

What does this mean?

What are the Possible Causes of the DTC P1EA6 Buick?

Faulty 14 Volt Power Module
14 Volt Power Module harness is open or shorted
14 Volt Power Module circuit poor electrical connection

How to Fix the DTC P1EA6 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 P1EA6 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1EA6 Buick Code

1. What does the OBDII code P1EA6 mean on a Buick?

The P1EA6 code indicates an issue with the 14 Volt Power Module Cooling Fan Control Circuit, which helps regulate the cooling fan for the 14-volt power module.

2. What are the common symptoms of a P1EA6 code?

Symptoms may include the check engine light turning on, overheating of the 14-volt power module, reduced charging efficiency, or irregular fan operation.

3. What causes the P1EA6 code to appear?

Common causes include a malfunctioning cooling fan, damaged wiring or connectors in the control circuit, or a fault in the 14-volt power module itself.

4. Can I drive my Buick with the P1EA6 code active?

Itâ€™s not recommended to drive for long periods with this code as it can lead to overheating of the power module, potentially causing further electrical issues.

5. How do I diagnose the P1EA6 code?

Start by inspecting the cooling fan, wiring, and connectors for visible damage. Use a multimeter to check circuit continuity and ensure the fan receives proper voltage.

6. How can I fix the P1EA6 code on my Buick?

Repairs may involve replacing the cooling fan, repairing or replacing damaged wiring or connectors, or replacing the 14-volt power module if itâ€™s faulty.

7. How much does it cost to repair a P1EA6 code?

Repair costs can vary, but replacing a cooling fan typically costs between $200 and $500, while addressing wiring issues may cost less if minimal damage is found.

8. Can a weak battery cause a P1EA6 code?

While unlikely, a weak or failing battery could contribute to electrical issues, indirectly affecting the cooling fan circuit.

9. How do I reset the P1EA6 code after repairs?

After completing repairs, use an OBDII scanner to clear the code. Drive the vehicle to ensure the issue is resolved and the code doesnâ€™t reappear.

10. What happens if the P1EA6 code is ignored?

Ignoring this code can lead to the 14-volt power module overheating, potentially causing electrical system failure or further damage to the vehicleâ€™s components.