AutoCodes – Generic – P1AB6

P1AB6 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 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 980

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

What does this mean?

What are the Possible Causes of the DTC P1AB6?

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?

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 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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Information for Specific Makes

P1AB6 Buick — Starter/Generator Phase V Current Sensor Circuit High Voltage
P1AB6 Cadillac — Starter/Generator Phase V Current Sensor Circuit High Voltage
P1AB6 Chevrolet — Starter/Generator Phase V Current Sensor Circuit High Voltage
P1AB6 GMC — Starter/Generator Phase V Current Sensor Circuit High Voltage
P1AB6 Saturn — Starter/Generator Phase V Current Sensor Circuit High Voltage

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 Code

1. What does the OBDII code P1AB6 mean?

P1AB6 indicates a high voltage issue in the Starter/Generator Phase V Current Sensor Circuit, often related to hybrid or electric vehicle systems.

2. What are the common symptoms of code P1AB6?

Symptoms may include a check engine light, reduced hybrid/electric performance, difficulty starting, or limited battery charging capabilities.

3. What causes the P1AB6 code to appear?

Common causes include a faulty current sensor, damaged wiring or connectors, a malfunctioning starter/generator, or issues in the vehicle's powertrain control module (PCM).

4. Can I drive my car with the P1AB6 code?

Driving with this code is not recommended as it may lead to further damage to the electrical system or reduced vehicle performance.

5. How do I diagnose the P1AB6 code?

Diagnosis involves checking the current sensor, inspecting wiring and connectors for damage, and using a multimeter to test for proper voltage and resistance in the circuit.

6. How do I fix the P1AB6 code?

Repairs may include replacing the faulty current sensor, repairing or replacing damaged wiring, or recalibrating the PCM.

7. Is the P1AB6 code specific to hybrid or electric vehicles?

Yes, this code is generally associated with hybrid or electric vehicles that use a starter/generator system.

8. Can a low battery cause the P1AB6 code?

A low or failing high-voltage battery can indirectly contribute to this code, as it may stress the starter/generator system and its components.

9. How much does it cost to repair the P1AB6 code?

Repair costs vary depending on the root cause but may range from $150 for wiring repairs to over $1,000 if the starter/generator requires replacement.

10. Can the P1AB6 code be cleared without repairs?

Clearing the code without addressing the issue may result in the code returning and potentially causing further damage. Proper diagnosis and repair are essential.