AutoCodesBuick – P1B01 Buick

P1B01 Buick Code - Drive Motor 2 Control Module Programmable Logic Device Security Code

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Hybrid Powertrain Control Module (HPCM). Common causes include Reprogram Power Inverter Control Module (PIM), Faulty Power Inverter Control Module (PIM), Power Inverter Control Module (PIM) harness is open or shorted. 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
P1B01 Buick indicates Drive Motor 2 Control Module Programmable Logic Device Security Code.
Common causes
Common causes include Reprogram Power Inverter Control Module (PIM), Faulty Power Inverter Control Module (PIM), Power Inverter Control Module (PIM) harness is open or shorted.
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 1,074
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 05, 2020
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Code P1B01 Buick Description

This diagnostic applies to internal microprocessor integrity conditions within the Hybrid Powertrain Control Module (HPCM). The HPCM and each Motor Control Module (MCM) utilize a Programmable Logic Device (PLD) to perform certain input and output functions. MCM 1 programs the PLD with software at every ignition ON event. MCM 1 and 2 verify that the PLD is programmed successfully.
OBDII Code P1B01 Buick - Drive Motor 2 Control Module Programmable Logic Device Security Code - AutoCodes.com
P1B01 Buick Code - Drive Motor 2 Control Module Programmable Logic Device Security Code

What are the Possible Causes of the DTC P1B01 Buick?

  • Reprogram Power Inverter Control Module (PIM)
  • Faulty Power Inverter Control Module (PIM)
  • Power Inverter Control Module (PIM) harness is open or shorted
  • Power Inverter Control Module (PIM) circuit poor electrical connection

How to Fix the DTC P1B01 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 P1B01 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.

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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 P1B01 Buick Code

1. What does the OBDII code P1B01 mean on a Buick?

P1B01 indicates an issue with the Drive Motor 2 Control Module’s Programmable Logic Device (PLD) Security Code, which is related to communication or programming between the control module and the vehicle.

2. What are the common symptoms of code P1B01 in a Buick?

Symptoms may include a check engine light, reduced vehicle performance, limited hybrid or electric functionality, and potential drivability issues.

3. What causes the P1B01 code to appear?

Common causes include corrupted software in the control module, failed or improperly programmed PLD, wiring or connection issues, or a malfunctioning Drive Motor 2 Control Module.

4. Can I drive my Buick with the P1B01 code active?

Driving with this code is not recommended, as it may lead to reduced performance or damage to the hybrid or electric drive system.

5. How is the P1B01 code diagnosed?

A technician will use a scan tool to retrieve the code, inspect the wiring and connections of the control module, and verify the PLD programming for errors or corruption.

6. Can the P1B01 code be fixed by reprogramming the control module?

Yes, reprogramming or reinitializing the Drive Motor 2 Control Module often resolves this issue if the problem is software-related.

7. What tools are needed to repair the P1B01 code?

Specialized diagnostic equipment, such as a professional scan tool and software for reprogramming the module, are typically required.

8. How much does it cost to fix the P1B01 code on a Buick?

Costs can range from $150 to $500, depending on the diagnostics, reprogramming requirements, and whether any hardware needs replacement.

9. Can a loose connection trigger the P1B01 code?

Yes, loose or damaged wiring connections to the Drive Motor 2 Control Module can cause this code to appear.

10. Is the P1B01 code specific to hybrid or electric Buicks?

Yes, this code is typically associated with hybrid or electric drivetrain systems where Drive Motor 2 is used.

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