B3895 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 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 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?
- 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?
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 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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Information for Specific Makes
- B3895 Buick — Deck Lid Ajar Siwtch Signal Circuit Low
- B3895 Cadillac — Deck Lid Ajar Siwtch Signal Circuit Low
- B3895 Chevrolet — Deck Lid Ajar Siwtch Signal Circuit Low
- B3895 GMC — Deck Lid Ajar Siwtch Signal Circuit Low
Frequently Asked Questions about B3895 Code
1. What are the common symptoms of OBDII code B3895 - Deck Lid Ajar Switch Signal Circuit Low?
- The common symptoms include a warning light on the dashboard indicating a problem with the deck lid (trunk) being open when it is not, difficulty closing the deck lid, and possible issues with the trunk release mechanism.
2. What could cause the OBDII code B3895 to trigger?
- The code B3895 can be triggered by a faulty deck lid ajar switch, a short or open circuit in the wiring related to the switch, or a malfunction in the body control module.
3. How can I diagnose the issue related to code B3895?
- To diagnose the issue, you can start by visually inspecting the deck lid ajar switch and its wiring for any visible damage. Using a multimeter, you can also test the continuity of the circuit and check for proper voltage readings.
4. Can I drive my vehicle with OBDII code B3895 present?
- It is generally safe to drive with the B3895 code present, but you should address the issue promptly to prevent any potential problems with the deck lid operation or related systems.
5. What are some repair tips for fixing OBDII code B3895?
- Repairing the B3895 code may involve replacing the faulty deck lid ajar switch, repairing any damaged wiring, or resetting the body control module. Ensure all repairs are done accurately to prevent future issues.
6. Are there any safety concerns associated with code B3895?
- While the B3895 code itself may not directly pose a safety risk, it is essential to address the underlying issue promptly to prevent any potential accidents or theft due to an unreliable deck lid closure.
7. Can weather conditions affect the triggering of code B3895?
- Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate issues with the deck lid ajar switch or wiring, leading to the triggering of code B3895.
8. Is it possible to reset the B3895 code without making any repairs?
- Resetting the B3895 code without addressing the underlying issue is not recommended, as the problem may persist and cause further complications with the deck lid operation.
9. How long does it typically take to repair OBDII code B3895?
- The repair time for code B3895 can vary depending on the exact cause of the issue and the extent of repairs needed. It is best to consult a professional technician for a more accurate estimate.
10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code B3895?
- Depending on the specific cause of the code, a DIY enthusiast with basic automotive knowledge may be able to fix the issue by replacing the deck lid ajar switch or repairing simple wiring problems. However, more complex issues may require professional assistance.
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