B3895 Cadillac Code - Deck Lid Ajar Siwtch Signal Circuit Low
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
- B3895 Cadillac indicates Deck Lid Ajar Siwtch Signal Circuit Low.
- 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.
Code B3895 Cadillac Description
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 short to ground in trunk ajar switch signal circuit for greater than 2 seconds.
What are the Possible Causes of the DTC B3895 Cadillac?
- 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 B3895 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3895 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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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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