AutoCodes – Saturn – P1B44 Saturn

P1B44 Saturn Code - Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Circuit 2 High Voltage

Quick Answer

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid/EV powertrain control module 1. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack. 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: P1B44 Saturn indicates Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Circuit 2 High Voltage.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack.
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 979

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 Mar 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B44 Saturn Description

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid/EV powertrain control module 1. Two of the motor control modules operate their respective drive motor based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump. The motor control modules and the hybrid/EV powertrain control module 1 are part of the power inverter module and are not serviced separately.
The motor control modules test for isolation between each high voltage bus and vehicle chassis whenever high voltage is present at the power inverter module.

OBDII Code P1B44 Saturn - Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Circuit 2 High Voltage - AutoCodes.com — P1B44 Saturn Code - Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Circuit 2 High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B44 Saturn?

Faulty Hybrid/Electric Vehicle Battery Pack

How to Fix the DTC P1B44 Saturn?

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 P1B44 Saturn 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 P1B44 Saturn 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 P1B44 Saturn Code

What does the OBDII code P1B44 mean for a Saturn vehicle?

The code P1B44 indicates an issue with the Drive Motor 2 Control Module detecting a high voltage in the Hybrid/EV Battery Voltage Isolation Sensing Circuit 2.

What are the common symptoms of the P1B44 code in a Saturn vehicle?

Symptoms may include warning lights on the dashboard (such as the check engine light or hybrid system warning), reduced vehicle performance, or a failure to start.

What causes the P1B44 code to appear in a Saturn vehicle?

Common causes include damaged or corroded wiring, a faulty Drive Motor 2 Control Module, a malfunctioning hybrid/EV battery, or problems with the voltage isolation sensing circuit.

Can I drive my Saturn with the P1B44 code active?

Driving with this code is not recommended, as high voltage issues in the hybrid/EV system can pose safety risks and may cause further damage to the vehicle.

How can I diagnose the P1B44 code in a Saturn vehicle?

Diagnosis typically involves using a scan tool to confirm the code, inspecting the wiring and connections for damage, and testing the Drive Motor 2 Control Module and battery isolation circuit for proper operation.

How is the P1B44 code typically repaired in a Saturn vehicle?

Repairs may include replacing damaged wiring, repairing or replacing the Drive Motor 2 Control Module, or addressing issues with the hybrid/EV battery or related circuits.

What tools are needed to troubleshoot the P1B44 code?

Youâ€™ll need an advanced OBDII scan tool capable of reading hybrid/EV system codes, a multimeter for testing electrical circuits, and potentially specialized tools for working with high-voltage systems.

How much does it cost to fix the P1B44 code on a Saturn vehicle?

Repair costs vary depending on the root cause but can range from $100 for minor wiring repairs to $2,000+ if the Drive Motor 2 Control Module or hybrid/EV battery needs replacement.

Is the P1B44 code unique to Saturn vehicles?

No, while the code is specific to hybrid/EV systems, similar codes can appear in other makes and models with hybrid or electric drivetrains.

Can the P1B44 code be prevented?

Regular maintenance, including inspecting wiring and connections, and addressing any electrical issues promptly, can help reduce the likelihood of this code appearing.