AutoCodes – Cadillac – B153F Cadillac

B153F Cadillac Code - Liftgate Object Sensor Malfunction

Quick Answer

The liftgate object sensors are pressure sensitive touch tapes located on either side of the upper inside edge of the liftgate panel. Common causes include Faulty Liftgate Object Sensors, Liftgate Object Sensors harness is open or shorted, Liftgate Object Sensors 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: B153F Cadillac indicates Liftgate Object Sensor Malfunction.
Common causes: Common causes include Faulty Liftgate Object Sensors, Liftgate Object Sensors harness is open or shorted, Liftgate Object Sensors 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 2,998

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 B153F Cadillac Description

The liftgate object sensors are pressure sensitive touch tapes located on either side of the upper inside edge of the liftgate panel. The two liftgate object sensors are placed in series between the liftgate object sensor signal circuit and the liftgate object low reference circuit. Each object sensor has a resistor as well as a switch. The resistors enable the liftgate control module to perform diagnostic functions on the circuits. When both liftgate object sensors are not pressed, the 5 volt reference voltage supplied by the liftgate control module passes through the resistors and the liftgate control module detects approximately 3.3 volts. Pressing a liftgate object sensor will cause the voltage to drop to approximately to 2.5 volts indicating an obstruction is present. If the liftgate is in the open position, the liftgate control module will prohibit liftgate movement. If the obstruction occurs during the power close function, the liftgate control module will command the liftgate to reverse direction.

OBDII Code B153F Cadillac - Liftgate Object Sensor Malfunction - AutoCodes.com — B153F Cadillac Code - Liftgate Object Sensor Malfunction

What does this mean?

What are the Possible Causes of the DTC B153F Cadillac?

Faulty Liftgate Object Sensors
Liftgate Object Sensors harness is open or shorted
Liftgate Object Sensors circuit poor electrical connection
Faulty Liftgate Control Module

How to Fix the DTC B153F 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

B153F 02 Liftgate Object Sensor Signal Circuit Short to Ground
B153F 03 Liftgate Object Sensor Signal Circuit Voltage Below Threshold
B153F 05 Liftgate Object Sensor Signal Circuit Short to Battery or Open
B153F 07 Liftgate Object Sensor Signal Circuit Voltage Above Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B153F 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 B153F Cadillac Code

1. What are the common symptoms of OBDII code B153F Cadillac (Liftgate Object Sensor Malfunction)?

- Common symptoms include the liftgate not opening or closing properly, the liftgate opening unexpectedly, and the liftgate object sensor warning light illuminating on the dashboard.

2. What can cause the OBDII code B153F Cadillac to trigger a Liftgate Object Sensor Malfunction?

- The code can be triggered by a faulty liftgate object sensor, damaged wiring or connectors, a misaligned sensor, or a malfunctioning liftgate control module.

3. How can I diagnose the cause of the Liftgate Object Sensor Malfunction in my Cadillac?

- You can diagnose the issue by visually inspecting the liftgate sensor and its wiring, using a diagnostic scan tool to retrieve the specific fault code, and performing tests to check the sensor's functionality.

4. What is the recommended repair for OBDII code B153F Cadillac (Liftgate Object Sensor Malfunction)?

- The recommended repair typically involves replacing the faulty liftgate object sensor, repairing any damaged wiring or connectors, realigning the sensor if necessary, or reprogramming the liftgate control module.

5. Can I reset the OBDII code B153F Cadillac (Liftgate Object Sensor Malfunction) without fixing the underlying issue?

- While you can reset the code using a diagnostic scan tool, it is not recommended to clear the code without addressing the root cause, as the issue may persist and potentially lead to safety concerns.

6. Are there any DIY tips for troubleshooting the Liftgate Object Sensor Malfunction in my Cadillac?

- DIY tips include checking the sensor for any visible damage, ensuring proper alignment, inspecting wiring for wear or breaks, and testing the sensor's functionality using a multimeter.

7. How serious is the OBDII code B153F Cadillac (Liftgate Object Sensor Malfunction)?

- While the issue may not affect the drivability of the vehicle, it can impact the liftgate's safety and convenience features, making it important to address the problem promptly.

8. Can weather conditions affect the operation of the liftgate object sensor in a Cadillac?

- Yes, extreme weather conditions such as heavy rain, snow, or extreme temperatures can potentially affect the performance of the liftgate object sensor and trigger the malfunction code.

9. Is it safe to continue driving my Cadillac with the OBDII code B153F (Liftgate Object Sensor Malfunction) unresolved?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue as soon as possible to prevent any inconvenience or safety hazards related to the liftgate operation.

10. How much does it typically cost to repair the Liftgate Object Sensor Malfunction in a Cadillac?

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