AutoCodes – Buick – P1B0F Buick

P1B0F Buick Code - Drive Motor 1 Position Learn Incorrect

Quick Answer

The drive motor position sensor is monitored by the drive motor control module. Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter Module 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: P1B0F Buick indicates Drive Motor 1 Position Learn Incorrect.
Common causes: Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter Module 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 870

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1B0F Buick Description

The drive motor position sensor is monitored by the drive motor control module. The drive motor control module monitors the angular position, speed and direction of the drive motor generator rotor based on the signals of the resolver-type position sensor. The position sensor contains a drive coil, two driven coils and an irregular shaped metallic rotor. The metallic rotor is mechanically attached to the shaft of the drive motor generator. At vehicle ON, the motor control module outputs a 7 volt ac, 10 kHz excitation signal to the drive coil. The drive coil excitation signal creates a magnetic field surrounding the two driven coils and the irregular shaped rotor. The motor control module then monitors the two driven coil circuits for a return signal. The position of the irregular metallic rotor causes the magnetically-induced return signals of the driven coils to vary in size and shape. A comparison of the two driven coils signals allows the motor control module to determine the exact position, speed and direction of the drive motor rotor. The position sensor is a non-serviceable part of the drive motor.
A measurement called offset is needed for accurate determination of the motor position. Offset is the relationship between the position sensor and the drive motor generator output shaft. Whenever the vehicle is cycled to OFF, the motor control module attempts to learn the offset of the drive motor position sensor by rapidly oscillating the motor and observing the position sensor signals.

OBDII Code P1B0F Buick - Drive Motor 1 Position Learn Incorrect - AutoCodes.com — P1B0F Buick Code - Drive Motor 1 Position Learn Incorrect

What does this mean?

What are the Possible Causes of the DTC P1B0F Buick?

Faulty Drive Motor Generator Power Inverter Module
Drive Motor Generator Power Inverter Module harness is open or shorted
Drive Motor Generator Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1B0F 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 P1B0F 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.

Need more information about the P1B0F Buick code?

Need more information on how to fix the P1B0F Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B0F Buick 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 P1B0F Buick Code

1. What does the OBDII code P1B0F mean on a Buick?

P1B0F indicates that the Drive Motor 1 Position Learn procedure is incorrect or incomplete, typically related to the hybrid or electric drive motor system.

2. What are the common symptoms of the P1B0F code on a Buick?

Symptoms may include reduced performance, illuminated check engine light, limited hybrid or EV functionality, or unusual drivetrain behavior.

3. What causes the P1B0F code to appear in a Buick?

The code is often caused by incomplete or incorrect motor position calibration, a malfunctioning drive motor position sensor, or issues with the hybrid control module.

4. Can I drive my Buick with the P1B0F code active?

Driving may be possible, but it's not advisable as the vehicle may experience reduced performance or further damage to the hybrid system.

5. How is the P1B0F code diagnosed?

A mechanic will use a scan tool to verify the code, inspect the drive motor position sensor, check for related codes, and confirm if the motor position learn process was completed correctly.

6. How do you fix the P1B0F code on a Buick?

Repairs may involve recalibrating the motor position, replacing a faulty position sensor, repairing wiring issues, or updating the hybrid control module software.

7. What is the Drive Motor Position Learn procedure?

It is a calibration process that ensures the hybrid drive motor's position sensor is accurately aligned with the motor's physical position.

8. Do I need special tools to fix the P1B0F code?

Yes, a professional-grade scan tool with hybrid system capabilities is required to perform the motor position learn procedure and diagnose the issue.

9. Can a software update fix the P1B0F code on a Buick?

In some cases, a software update for the hybrid control module may resolve the issue if the problem stems from outdated programming.

10. How much does it cost to repair the P1B0F code on a Buick?

Repair costs vary depending on the exact cause, but recalibration or sensor replacement typically ranges from $150 to $500, depending on labor rates and parts.