AutoCodes – Saturn – P1B15 Saturn

P1B15 Saturn Code - Regenerative Braking Torque Request Signal Message Counter Incorrect

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. Common causes include Reprogram Motor Generator Power Inverter Module, Faulty Motor Generator Power Inverter Module, Motor Generator Power Inverter Module 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: P1B15 Saturn indicates Regenerative Braking Torque Request Signal Message Counter Incorrect.
Common causes: Common causes include Reprogram Motor Generator Power Inverter Module, Faulty Motor Generator Power Inverter Module, Motor Generator Power Inverter Module 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 816

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 P1B15 Saturn Description

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module and is not serviced separately. The hybrid powertrain control module monitors its ability to read and write to the memory. The hybrid powertrain control module processor monitors the data to verify that the indicated brake torque request calculation is correct.

OBDII Code P1B15 Saturn - Regenerative Braking Torque Request Signal Message Counter Incorrect - AutoCodes.com — P1B15 Saturn Code - Regenerative Braking Torque Request Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P1B15 Saturn?

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

How to Fix the DTC P1B15 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 P1B15 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.

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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 P1B15 Saturn Code

1. What are the common symptoms of OBDII code P1B15 in a Saturn related to the Regenerative Braking Torque Request Signal Message Counter Incorrect?

- Common symptoms include the check engine light illuminating, reduced regenerative braking performance, and potential issues with the vehicle's hybrid system.

2. What can cause the OBDII code P1B15 to trigger in a Saturn?

- This code can be triggered by a faulty regenerative braking torque request signal message counter, communication errors within the hybrid system, or wiring issues.

3. How serious is the OBDII code P1B15 in a Saturn?

- While the vehicle may still be drivable with this code, it is important to address it promptly to prevent potentially worsening issues with the regenerative braking system and overall hybrid performance.

4. What should I do if my Saturn shows the OBDII code P1B15 for Regenerative Braking Torque Request Signal Message Counter Incorrect?

- It is recommended to have the vehicle inspected by a qualified technician to diagnose the specific cause of the code and determine the necessary repairs.

5. Can I continue driving my Saturn with the OBDII code P1B15 present?

- It is generally safe to drive the vehicle with this code, but it is advisable to address the underlying issue as soon as possible to prevent further complications.

6. How can I repair the OBDII code P1B15 in my Saturn?

- Repair options may include replacing the faulty regenerative braking torque request signal message counter, addressing communication errors in the hybrid system, or repairing any damaged wiring.

7. Is it possible to reset the OBDII code P1B15 in a Saturn without fixing the issue?

- While clearing the code may temporarily turn off the check engine light, it is essential to address the root cause of the problem to prevent its recurrence.

8. Will the OBDII code P1B15 in a Saturn cause any damage if left unresolved?

- Ignoring this code may lead to reduced regenerative braking efficiency, potential strain on the hybrid system components, and overall decreased performance in the long run.

9. Can weather conditions affect the triggering of the OBDII code P1B15 in a Saturn?

- Extreme weather conditions, such as high temperatures or moisture exposure, can potentially impact the functioning of the regenerative braking system and trigger this code.

10. How can I prevent the OBDII code P1B15 from occurring in my Saturn in the future?

- Regular maintenance, including checking the hybrid system components and addressing any issues promptly, can help prevent the recurrence of this code.