B3808 Cadillac Code - Rear Door Lock Relay Circuit
Quick Answer
The Body Control Module (BCM) internally grounds the door lock relay control circuit for the rear door lock relay when it receives a class 2 message from the driver door module (DDM) or passenger door module (PDM). Common causes include Faulty Rear Door Lock Relay, Rear Door Lock Relay harness is open or shorted, Rear Door Lock Relay 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
- B3808 Cadillac indicates Rear Door Lock Relay Circuit.
- Common causes
- Common causes include Faulty Rear Door Lock Relay, Rear Door Lock Relay harness is open or shorted, Rear Door Lock Relay 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 B3808 Cadillac Description
What are the Possible Causes of the DTC B3808 Cadillac?
- Faulty Rear Door Lock Relay
- Rear Door Lock Relay harness is open or shorted
- Rear Door Lock Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3808 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 B3808 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 B3808 Cadillac Code
1. What are common symptoms of OBDII code B3808 in a Cadillac related to the rear door lock relay circuit?
- Common symptoms include issues with the rear door not locking or unlocking properly, intermittent power door lock failures, and in some cases, a non-functional rear door lock altogether.
2. What are some possible causes of OBDII code B3808 Cadillac related to the rear door lock relay circuit?
- Possible causes include a faulty rear door lock relay, damaged wiring or connectors in the circuit, a malfunctioning rear door lock actuator, or issues with the vehicle's central locking system.
3. How can I diagnose OBDII code B3808 in my Cadillac's rear door lock relay circuit?
- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific trouble code, performing a visual inspection of the rear door lock components, checking for any loose or damaged wiring, and testing the rear door lock relay and actuator for proper function.
4. What are some tips for repairing OBDII code B3808 related to the rear door lock relay circuit in a Cadillac?
- Repair tips may include replacing a faulty rear door lock relay, repairing or replacing damaged wiring or connectors, testing and potentially replacing the rear door lock actuator, and ensuring all connections are secure and free of corrosion.
5. Can OBDII code B3808 Cadillac related to the rear door lock relay circuit be reset without fixing the underlying issue?
- While you can clear the trouble code with a diagnostic scanner, it is not recommended to reset the code without addressing the underlying issue, as the problem may persist and potentially lead to further issues with the rear door lock system.
6. Is it safe to continue driving my Cadillac with OBDII code B3808 related to the rear door lock relay circuit?
- It is generally safe to continue driving your Cadillac with this code, but it is important to address the issue promptly to avoid potential inconvenience or safety concerns related to the rear door lock functionality.
7. How much does it typically cost to repair OBDII code B3808 in a Cadillac's rear door lock relay circuit?
- The cost of repair can vary depending on the specific cause of the issue, but it may involve parts costs for a new relay or actuator, labor costs for diagnosis and repair, and potentially additional costs for wiring repairs or replacements.
8. Are there any preventive maintenance steps I can take to avoid OBDII code B3808 related to the rear door lock relay circuit?
- Regularly inspecting the rear door lock components for any signs of wear or damage, keeping connectors clean and free of corrosion, and addressing any issues promptly can help prevent this code from occurring in the future.
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