AutoCodes – GMC – P1B0F GMC

P1B0F GMC 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 GMC 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.

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Code Popularity 1,141

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

What does this mean?

What are the Possible Causes of the DTC P1B0F GMC?

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 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 P1B0F 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.

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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 P1B0F GMC Code

1. What are the common symptoms of OBDII code P1B0F GMC (Drive Motor 1 Position Learn Incorrect)?

The common symptoms include poor acceleration, reduced power, and the vehicle may go into a limited propulsion mode.

2. What can cause the OBDII code P1B0F GMC to trigger?

This code is typically triggered by issues with the drive motor position sensor or the drive motor control module.

3. How can I diagnose the cause of OBDII code P1B0F GMC?

Diagnosing this code usually requires advanced diagnostic tools to check the drive motor position sensor, wiring connections, and the drive motor control module.

4. Can I continue driving my vehicle with the OBDII code P1B0F GMC present?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the drive motor system.

5. What are some possible repair tips for OBDII code P1B0F GMC?

Repair tips may include checking and repairing any damaged wiring, replacing the drive motor position sensor, or reprogramming the drive motor control module.

6. Is it possible to reset the OBDII code P1B0F GMC without fixing the underlying issue?

While you can clear the code with an OBDII scanner, it is crucial to address the underlying problem to prevent it from reoccurring.

7. Can a DIY enthusiast fix the OBDII code P1B0F GMC issue at home?

Due to the complexity of the drive motor system, it is recommended to seek professional help or consult a certified mechanic for proper diagnosis and repair.

8. How much does it typically cost to repair OBDII code P1B0F GMC?

The cost of repairs for this code can vary depending on the extent of the issue, but it may range from a few hundred to a few thousand dollars.

9. Will OBDII code P1B0F GMC cause my vehicle to fail an emissions test?

Yes, this code can cause your vehicle to fail an emissions test, as it indicates a malfunction in the drive motor system affecting emissions control.

10. How can I prevent OBDII code P1B0F GMC from occurring in the future?

Regular maintenance and inspections of the drive motor system, including the position sensor and control module, can help prevent this code from occurring in the future.