AutoCodes – Cadillac – B153B Cadillac

B153B Cadillac Code - Liftgate Open Switch Signal Circuit

Quick Answer

The full open switch is part of the gear motor assembly and will close and become active when the liftgate reaches the full open position. Common causes include Faulty Liftgate Motor Assembly, Liftgate Motor Assembly harness is open or shorted, Liftgate Motor Assembly 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: B153B Cadillac indicates Liftgate Open Switch Signal Circuit.
Common causes: Common causes include Faulty Liftgate Motor Assembly, Liftgate Motor Assembly harness is open or shorted, Liftgate Motor Assembly 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 1,798

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 May 02, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B153B Cadillac Description

The full open switch is part of the gear motor assembly and will close and become active when the liftgate reaches the full open position. The full open switch signal circuit is supplied battery voltage through a resistor and monitored within the Liftgate Control Module (LGM). The Liftgate Control Module provides a low reference circuit and when the switch contacts close, the signal circuit goes low and the LGM determines the switch to be active.

OBDII Code B153B Cadillac - Liftgate Open Switch Signal Circuit - AutoCodes.com — B153B Cadillac Code - Liftgate Open Switch Signal Circuit

What does this mean?

What are the Possible Causes of the DTC B153B Cadillac?

Faulty Liftgate Motor Assembly
Liftgate Motor Assembly harness is open or shorted
Liftgate Motor Assembly circuit poor electrical connection
Faulty Liftgate Control Module (LGM)

How to Fix the DTC B153B Cadillac?

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 does this mean?

Code Tech Notes

B153B 02 Liftgate Open Switch Signal Circuit Short to Ground
B153B 05 Liftgate Open Switch Signal Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B153B Cadillac 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 B153B Cadillac Code

1. What does OBDII code B153B for Cadillac indicate?

- This code indicates a problem with the liftgate open switch signal circuit in a Cadillac vehicle.

2. What are the common symptoms of OBDII code B153B in a Cadillac?

- Common symptoms include the liftgate not opening or closing properly, the liftgate warning light illuminated on the dashboard, and issues with the power liftgate function.

3. What are the potential causes of OBDII code B153B in a Cadillac?

- Possible causes include a faulty liftgate open switch, damaged wiring or connectors in the liftgate circuit, or a malfunctioning liftgate control module.

4. How can I diagnose the issue related to OBDII code B153B in my Cadillac?

- To diagnose this issue, you can use an OBDII scanner to read the trouble code, visually inspect the liftgate open switch and wiring for any visible damage, and perform continuity tests on the circuit.

5. Can I repair OBDII code B153B in my Cadillac myself?

- Depending on your skill level and experience, you may be able to repair this issue yourself by replacing the faulty liftgate open switch, repairing damaged wiring, or resetting the liftgate control module.

6. Is it safe to drive my Cadillac with OBDII code B153B present?

- It is generally safe to drive your Cadillac with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the liftgate system.

7. How much does it typically cost to repair OBDII code B153B in a Cadillac?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can OBDII code B153B in a Cadillac cause any long-term damage if left unresolved?

- If left unresolved, this issue may lead to continued problems with the liftgate operation and potentially cause damage to other components in the liftgate system over time.

9. Are there any preventive measures to avoid encountering OBDII code B153B in my Cadillac?

- To prevent this issue, you can regularly inspect the liftgate system for any signs of wear or damage, avoid slamming the liftgate shut, and ensure proper maintenance of the vehicle's electrical components.

10. Will resetting the OBDII code B153B resolve the issue in my Cadillac?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing OBDII code B153B. It is important to diagnose and address the root cause of the issue for a lasting solution.