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B3895 Cadillac Code - Deck Lid Ajar Siwtch Signal Circuit Low

Quick Answer

The B3895 diagnostic trouble code (DTC) for Cadillac vehicles indicates that there is a low signal in the deck lid ajar switch circuit. Common causes include Faulty deck lid ajar switch, Damaged wiring or connectors in the circuit, Corrosion in the circuit. 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
B3895 Cadillac indicates Deck Lid Ajar Siwtch Signal Circuit Low.
Common causes
Common causes include Faulty deck lid ajar switch, Damaged wiring or connectors in the circuit, Corrosion in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code B3895 Cadillac Description

The B3895 diagnostic trouble code (DTC) for Cadillac vehicles indicates that there is a low signal in the deck lid ajar switch circuit. This means that the vehicle's onboard computer is receiving a signal indicating that the deck lid (trunk) is open when it should be closed. This can lead to issues with the vehicle's security system, as well as potential safety concerns if the trunk is not properly closed while driving.

OBDII Code B3895 Cadillac - Deck Lid Ajar Siwtch Signal Circuit Low
B3895 Cadillac Code - Deck Lid Ajar Siwtch Signal Circuit Low

Common Causes of B3895 Cadillac

  1. Faulty deck lid ajar switch
  2. Damaged wiring or connectors in the circuit
  3. Corrosion in the circuit
  4. Poor connection at the switch or module

Symptoms of B3895 Cadillac

  1. Trunk open warning light on the dashboard
  2. Security system not engaging properly
  3. Trunk not latching securely
  4. Inability to lock the trunk

How to Fix B3895 Cadillac

  1. Begin by visually inspecting the deck lid ajar switch and its wiring for any visible damage or corrosion.
  2. Test the switch using a multimeter to check for continuity and proper operation.
  3. Check the wiring and connectors in the circuit for any damage or loose connections.
  4. Repair or replace any damaged components, such as the switch, wiring, or connectors.
  5. Clear the DTC from the vehicle's computer and test the system to ensure the issue has been resolved.

Cost to Fix B3895 Cadillac

The cost of repairing a deck lid ajar switch signal circuit low issue can vary depending on the specific cause of the problem and the labor rates in your area. In general, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates can vary, so it's best to check with local auto repair shops for a more accurate estimate.

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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 B3895 Cadillac Code

1. What does the OBDII code B3895 mean for a Cadillac?

The B3895 code indicates a problem with the deck lid (trunk) ajar switch signal circuit, specifically that the circuit is reading a low signal when it shouldn't.

2. What are the common symptoms of the B3895 code?

Symptoms may include the trunk ajar warning light staying on, issues with the remote trunk release, or a failure of trunk-related features like automatic closing systems.

3. What causes the B3895 code to appear?

Common causes include a faulty deck lid ajar switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).

4. How can I diagnose the B3895 code?

Start by checking the trunk ajar switch for proper operation, inspect the wiring and connectors for damage or corrosion, and use a multimeter to test for continuity in the circuit.

5. Can a faulty deck lid ajar switch trigger the B3895 code?

Yes, a malfunctioning or stuck deck lid ajar switch is a primary cause of this code.

6. Is it safe to drive with the B3895 code active?

Yes, it is generally safe to drive, but the code may disable certain trunk features and could result in the trunk not being properly secured.

7. How do I fix the B3895 code?

Repairs may involve replacing the deck lid ajar switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the BCM if necessary.

8. Can clearing the B3895 code fix the issue?

Clearing the code may temporarily reset the warning, but the underlying issue must be resolved to prevent the code from returning.

9. How much does it cost to repair the B3895 code?

The cost can vary but generally ranges between $50 and $200 for parts like a deck lid ajar switch, plus labor costs if professional repair is needed.

10. Can extreme weather conditions cause the B3895 code?

Yes, extreme cold or moisture can affect the deck lid ajar switch or corrode the wiring, potentially triggering the code.

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