AutoCodes – Chevrolet – B3896 Chevrolet

B3896 Chevrolet Code - Deck Lid Ajar Siwtch Signal Circuit Open Or High

Quick Answer

Rear compartment occupant sensor is connected to battery voltage and ground at all times. Common causes include Faulty Deck Lid Ajar Siwtch, Deck Lid Ajar Siwtch harness is open or shorted, Deck Lid Ajar Siwtch 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: B3896 Chevrolet indicates Deck Lid Ajar Siwtch Signal Circuit Open Or High.
Common causes: Common causes include Faulty Deck Lid Ajar Siwtch, Deck Lid Ajar Siwtch harness is open or shorted, Deck Lid Ajar Siwtch 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 1,595

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3896 Chevrolet Description

Rear compartment occupant sensor is connected to battery voltage and ground at all times. When a combination of a difference in temperature compared to ambient and movement is detected by rear compartment occupant sensor and ignition is off, Body Control Module (BCM) will command horn to chirp and command deck lid to release within 3 minutes of a detect signal from rear compartment occupant sensor. If ignition is on when BCM receives detect signal, disable switch on rear compartment occupant sensor will flash.
Rear compartment occupant sensor can be disabled by pressing disable switch on rear compartment occupant sensor and holding for 2 seconds. BCM will command trunk ajar telltale on for one minute with each ignition on signal while rear compartment occupant sensor is disabled. Once deck lid is opened, rear compartment occupant sensor will reset to on and resume normal operation. Rear compartment occupant sensor can also be enabled inside of rear compartment with ignition on or off by pressing disable switch. Deck lid ajar switch signal circuit is used for rear compartment occupant sensor class 2 data.
The Diagnostic Trouble Code (DTC) sets when BCM detects an open, short to voltage in trunk ajar switch signal circuit for greater than 2 seconds.

OBDII Code B3896 Chevrolet - Deck Lid Ajar Siwtch Signal Circuit Open Or High - AutoCodes.com — B3896 Chevrolet Code - Deck Lid Ajar Siwtch Signal Circuit Open Or High

What does this mean?

What are the Possible Causes of the DTC B3896 Chevrolet?

Faulty Deck Lid Ajar Siwtch
Deck Lid Ajar Siwtch harness is open or shorted
Deck Lid Ajar Siwtch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3896 Chevrolet?

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 B3896 Chevrolet 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 B3896 Chevrolet Code

1. What are common symptoms of OBDII code B3896 on a Chevrolet related to the deck lid ajar switch signal circuit?

The common symptoms include the trunk or deck lid not closing properly, warning lights on the dashboard, and possibly issues with the vehicle's remote trunk release function.

2. What are the potential causes of the B3896 OBDII code on a Chevrolet?

The code B3896 typically indicates a problem with the deck lid ajar switch signal circuit. Possible causes include a faulty deck lid ajar switch, damaged wiring in the circuit, or a poor connection.

3. How can I diagnose the B3896 code on my Chevrolet related to the deck lid ajar switch signal circuit?

To diagnose the issue, you can visually inspect the deck lid ajar switch, check the wiring for any visible damage, and use a multimeter to test the circuit's continuity and voltage.

4. Can I drive my Chevrolet with the B3896 code related to the deck lid ajar switch signal circuit?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functioning of the deck lid and related systems.

5. How can I repair the B3896 OBDII code on my Chevrolet caused by the deck lid ajar switch signal circuit?

Repairing the B3896 code involves identifying and fixing the underlying issue, which may include replacing the deck lid ajar switch, repairing damaged wiring, or addressing any loose connections.

6. Will resetting the OBDII system clear the B3896 code related to the deck lid ajar switch signal circuit on my Chevrolet?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the deck lid ajar switch signal circuit is not resolved, the code is likely to reappear.

7. Can a DIY enthusiast fix the B3896 OBDII code related to the deck lid ajar switch signal circuit on a Chevrolet?

Depending on your experience and tools, a DIY enthusiast may be able to fix the issue by replacing the deck lid ajar switch, repairing wiring, or addressing loose connections. However, professional help may be needed for complex diagnostics.

8. How much does it typically cost to repair the B3896 OBDII code on a Chevrolet due to the deck lid ajar switch signal circuit issue?

The cost of repairing the B3896 code can vary depending on the exact cause of the problem. It may range from a simple switch replacement costing around $50 to more extensive repairs involving wiring or circuit issues.

9. Is the B3896 OBDII code related to the deck lid ajar switch signal circuit a common issue in Chevrolet vehicles?

While not extremely common, issues with the deck lid ajar switch signal circuit can occur in Chevrolet vehicles, leading to the triggering of the B3896 code. Regular maintenance and inspections can help prevent such problems.

10. Can a faulty deck lid ajar switch cause other issues in a Chevrolet besides triggering the B3896 code?

Yes, a faulty deck lid ajar switch can potentially cause other problems such as drainage issues in the trunk, malfunctioning interior lights, or issues with the vehicle's security system. It is important to address such issues promptly.