AutoCodes – Buick – B133B Buick

B133B Buick Code - Reverse Gear Status Not Plausible

Quick Answer

The Human Machine Interface Control Module receives a signal from the Human Machine Interface Control Module Bypass Module indicating reverse gear status. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control 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: B133B Buick indicates Reverse Gear Status Not Plausible.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control 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 534

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 Apr 17, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B133B Buick Description

The Human Machine Interface Control Module receives a signal from the Human Machine Interface Control Module Bypass Module indicating reverse gear status. The reverse gear status is used to determine when to activate the rearview camera display. The Human Machine Interface Control Module also receives another reverse gear status message via serial data. The Human Machine Interface Control Module compares the two serial data messages to verify the plausibility of the messages. The Diagnostic Trouble Code (DTC) will be set when the Human Machine Interface Control Module has determined the reverse message states do not match and are therefore not plausible.

OBDII Code B133B Buick - Reverse Gear Status Not Plausible - AutoCodes.com — B133B Buick Code - Reverse Gear Status Not Plausible

What does this mean?

What are the Possible Causes of the DTC B133B Buick?

Faulty Body Control Module (BCM)
Body Control Module harness is open or shorted
Body Control Module circuit poor electrical connection
Faulty Human Machine Interface Control Module

How to Fix the DTC B133B 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 B133B 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 B133B Buick 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 B133B Buick Code

1. What are the common symptoms of the OBDII code B133B in a Buick related to Reverse Gear Status Not Plausible?

- The common symptoms include issues shifting into reverse gear, erratic behavior in reverse, and potential transmission slipping.

2. What are some possible causes triggering the OBDII code B133B in a Buick indicating Reverse Gear Status Not Plausible?

- Possible causes may include faulty transmission sensors, damaged wiring or connectors, transmission fluid issues, or a malfunctioning transmission control module.

3. How can I diagnose the OBDII code B133B in a Buick indicating Reverse Gear Status Not Plausible?

- Diagnosis involves using an OBDII scanner to read the code, checking the transmission fluid level and condition, inspecting the wiring and connectors, and testing the transmission sensors.

4. What are the recommended repair tips for resolving the OBDII code B133B in a Buick related to Reverse Gear Status Not Plausible?

- Repair tips may include replacing faulty transmission sensors, repairing damaged wiring or connectors, performing a transmission fluid flush and refill, or reprogramming the transmission control module.

5. Can driving with the OBDII code B133B in a Buick indicating Reverse Gear Status Not Plausible cause further damage?

- Continuing to drive with this code may lead to further transmission issues and potential damage, so it is recommended to address the problem promptly.

6. Is it safe to ignore the OBDII code B133B in a Buick indicating Reverse Gear Status Not Plausible?

- Ignoring the code can result in unreliable reverse gear operation and possible transmission damage, so it is not recommended to ignore it.

7. How much does it typically cost to repair the OBDII code B133B in a Buick related to Reverse Gear Status Not Plausible?

- The cost of repair can vary depending on the specific cause, but it may range from a few hundred to over a thousand dollars, considering parts and labor.

8. Can I reset the OBDII code B133B in a Buick related to Reverse Gear Status Not Plausible on my own?

- You can reset the code using an OBDII scanner, but it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

9. Are there any preventive measures to avoid triggering the OBDII code B133B in a Buick indicating Reverse Gear Status Not Plausible?

- Regularly servicing the transmission, checking for leaks, monitoring transmission fluid levels, and addressing any issues promptly can help prevent triggering this code.

10. How long does it typically take to repair the OBDII code B133B in a Buick related to Reverse Gear Status Not Plausible?

- The repair duration can vary based on the specific cause and complexity of the issue, but it may take anywhere from a few hours to a day or more to resolve this problem effectively.