AutoCodes – Buick – P1AB6 Buick

P1AB6 Buick Code - Starter/Generator Phase V Current Sensor Circuit High Voltage

Quick Answer

The Starter/Generator Control Module (SGCM) phase U/V/W current sensors are used for motor control and power inverter module (PIM) current sensor rationality check. 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: P1AB6 Buick indicates Starter/Generator Phase V Current Sensor Circuit High Voltage.
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 859

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 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1AB6 Buick Description

The Starter/Generator Control Module (SGCM) phase U/V/W current sensors are used for motor control and power inverter module (PIM) current sensor rationality check. The SGCM monitors the current sensor for the following:
- To detect a failure of the U/V/W-phase current sensor circuit below valid range.
- To detect a failure of the U/V/W-phase current sensor circuit above valid range.

OBDII Code P1AB6 Buick - Starter/Generator Phase V Current Sensor Circuit High Voltage - AutoCodes.com — P1AB6 Buick Code - Starter/Generator Phase V Current Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1AB6 Buick?

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 P1AB6 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 P1AB6 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 P1AB6 Buick Code

1. What are the common symptoms of OBDII code P1AB6 in a Buick related to the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- Common symptoms include the illumination of the check engine light, issues with starting the vehicle, reduced power, and potential stalling.

2. What are the possible causes of OBDII code P1AB6 in a Buick indicating a high voltage condition in the Starter/Generator Phase V Current Sensor Circuit?

- The high voltage condition in the Starter/Generator Phase V Current Sensor Circuit can be caused by wiring harness issues, a faulty current sensor, or problems with the starter/generator unit.

3. How can I diagnose the OBDII code P1AB6 in my Buick related to the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- Diagnosis typically involves using a scan tool to retrieve the code, inspecting the wiring for damage, testing the current sensor, and checking the starter/generator for any issues.

4. Is it safe to continue driving my Buick with OBDII code P1AB6 related to the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- It is not recommended to continue driving the vehicle with this code as it can lead to further damage to the electrical system and potentially cause the vehicle to stall unexpectedly.

5. Can I repair OBDII code P1AB6 in my Buick related to the Starter/Generator Phase V Current Sensor Circuit High Voltage myself?

- While some DIY enthusiasts may attempt to repair this issue, it is recommended to seek professional help, especially when dealing with electrical components like the starter/generator and current sensor.

6. What are some general tips for repairing OBDII code P1AB6 in a Buick indicating a high voltage condition in the Starter/Generator Phase V Current Sensor Circuit?

- Ensure all wiring connections are secure and free of damage, test the current sensor for proper functionality, and consider consulting a mechanic with experience in diagnosing and repairing electrical issues.

7. How much does it typically cost to repair OBDII code P1AB6 related to the Starter/Generator Phase V Current Sensor Circuit High Voltage in a Buick?

- The cost of repair can vary depending on the underlying cause of the issue, but it may involve replacing the current sensor, repairing wiring, or addressing problems with the starter/generator, potentially ranging from $200 to $600 or more.

8. Are there any recalls or technical service bulletins related to OBDII code P1AB6 in Buick vehicles regarding the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- It's advisable to check with your local Buick dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any related recalls or technical service bulletins for this specific issue.

9. Can a faulty battery or alternator cause OBDII code P1AB6 in a Buick related to the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- While a faulty battery or alternator can sometimes cause electrical issues, the specific nature of this code typically points to problems with the current sensor, wiring, or starter/generator unit itself.

10. Will resetting the OBDII code P1AB6 related to the Starter/Generator Phase V Current Sensor Circuit High Voltage in my Buick make the problem go away?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the high voltage condition is not addressed, the code is likely to reappear once the problem is detected again by the vehicle's onboard diagnostics.