AutoCodes – GMC – P1A6E GMC

P1A6E GMC Code - Starter/Generator Control Module System Voltage High

Quick Answer

The Starter/Generator Control Module (SGCM) monitors the system voltage sensor to detect a shorted low or high condition. Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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: P1A6E GMC indicates Starter/Generator Control Module System Voltage High.
Common causes: Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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 947

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 Feb 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A6E GMC Description

The Starter/Generator Control Module (SGCM) monitors the system voltage sensor to detect a shorted low or high condition.

OBDII Code P1A6E GMC - Starter/Generator Control Module System Voltage High - AutoCodes.com — P1A6E GMC Code - Starter/Generator Control Module System Voltage High

What does this mean?

What are the Possible Causes of the DTC P1A6E GMC?

Faulty Starter/Generator Control Module (SGCM)
Starter/Generator Control Module (SGCM) harness is open or shorted
Starter/Generator Control Module (SGCM) circuit poor electrical connection

How to Fix the DTC P1A6E GMC?

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 P1A6E GMC 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.

Need more information about the P1A6E GMC code?

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Need Help with the Code?

Get the P1A6E GMC code diagnosed by a professional: Find a repair shop in your area

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 P1A6E GMC Code

1. What are the common symptoms of OBDII code P1A6E GMC (Starter/Generator Control Module System Voltage High)?

The common symptoms include illuminated check engine light, reduced engine power, difficulty starting the vehicle, and potential electrical issues.

2. What could cause the OBDII code P1A6E GMC to trigger?

The code P1A6E can be triggered by a faulty starter/generator control module, a malfunctioning voltage regulator, a wiring issue, or a problem with the vehicle's charging system.

3. How serious is the OBDII code P1A6E GMC (Starter/Generator Control Module System Voltage High)?

While the severity can vary, it is important to address this code promptly to prevent potential damage to the vehicle's electrical system and ensure safe operation.

4. Can I continue driving with the OBDII code P1A6E GMC active?

It is not recommended to continue driving with the code active, as it may lead to further electrical issues or potential stalling of the vehicle.

5. How can I diagnose the cause of OBDII code P1A6E GMC?

Diagnosis typically involves using a diagnostic scanner to read the code, as well as performing a thorough inspection of the starter/generator control module, voltage regulator, and related wiring.

6. What are some repair tips for addressing OBDII code P1A6E GMC?

Repair tips may include checking and repairing any damaged wiring, replacing the starter/generator control module or voltage regulator if faulty, and ensuring proper connection of components.

7. Can a DIY enthusiast fix the OBDII code P1A6E GMC issue?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address the issue by following repair guides and utilizing the necessary equipment.

8. How much does it cost to repair OBDII code P1A6E GMC at a mechanic?

The cost of repair can vary depending on the underlying cause, parts needed, and labor rates at the mechanic's shop. It is advisable to obtain quotes from different mechanics for comparison.

9. Will resetting the OBDII code P1A6E GMC make it go away permanently?

Simply resetting the code may temporarily clear the check engine light, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause.

10. Is OBDII code P1A6E GMC a common issue in GMC vehicles?

While the frequency of this specific code may vary, issues related to the starter/generator control module and system voltage can occur in GMC vehicles and other makes as well.