AutoCodes – GMC – P1AB6 GMC

P1AB6 GMC 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 GMC 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 1,005
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 26, 2020
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Code P1AB6 GMC 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 GMC - Starter/Generator Phase V Current Sensor Circuit High Voltage - AutoCodes.com
P1AB6 GMC Code - Starter/Generator Phase V Current Sensor Circuit High Voltage

What are the Possible Causes of the DTC P1AB6 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 P1AB6 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 P1AB6 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 P1AB6 GMC code?

Need more information on how to fix the P1AB6 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 GMC Code

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

- Common symptoms include the illumination of the check engine light, reduced engine performance, and potential starting issues.

2. What could be causing the Starter/Generator Phase V Current Sensor Circuit High Voltage code P1AB6 in a GMC vehicle?

- Possible causes include a faulty current sensor, damaged wiring or connections, issues with the starter/generator system, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code P1AB6 GMC for the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the current sensor and related components, and testing the electrical connections for proper voltage and continuity.

4. Is it safe to continue driving with OBDII code P1AB6 GMC active in my vehicle?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the starter/generator system and potentially result in more severe issues.

5. Can I reset the OBDII code P1AB6 GMC related to the Starter/Generator Phase V Current Sensor Circuit High Voltage on my own?

- While you can clear the code using a diagnostic scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. Are there any simple repairs I can attempt to fix OBDII code P1AB6 GMC at home?

- Simple repairs may include checking and tightening electrical connections, inspecting for damaged wires, or replacing a faulty current sensor if easily accessible.

7. Do I need a professional mechanic to resolve OBDII code P1AB6 GMC for the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- In cases where the diagnosis points to more complex issues with the starter/generator system or control module, it is recommended to seek the expertise of a professional mechanic for proper repair.

8. How much can I expect to pay for repairing OBDII code P1AB6 GMC in a GMC vehicle?

- Repair costs can vary depending on the specific cause of the code, but you may expect to pay anywhere from $100 to $500 or more for parts and labor.

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

- While a faulty battery or alternator can sometimes cause electrical issues, they are not typically directly related to triggering this specific code. It is important to focus on diagnosing the current sensor circuit and related components.

10. How long does it usually take to repair OBDII code P1AB6 GMC for the Starter/Generator Phase V Current Sensor Circuit High Voltage?

- Repair times can vary depending on the complexity of the issue and the availability of parts, but you can generally expect the repair to take a few hours to complete.

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