B3135 Cadillac Code - All Doors Lock Circuit
Quick Answer
The Body Control Module (BCM) supplies a 12-volt signal to the lock and unlock signal circuits of the driver and passenger door lock switches. Common causes include Faulty Door Latch Assembly, Door Latch Assembly harness is open or shorted, Door Latch Assembly 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
- B3135 Cadillac indicates All Doors Lock Circuit.
- Common causes
- Common causes include Faulty Door Latch Assembly, Door Latch Assembly harness is open or shorted, Door Latch Assembly 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 B3135 Cadillac Description
The BCM, upon receipt of a lock switch lock or unlock signal, will supply voltage to the door lock actuator lock or unlock control circuits. Since the opposite side of the lock actuator is connected to the ground through the other lock actuator control circuit, the doors will then lock or unlock as commanded. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground or open/high resistance on a door latch control circuit.
What are the Possible Causes of the DTC B3135 Cadillac?
- Faulty Door Latch Assembly
- Door Latch Assembly harness is open or shorted
- Door Latch Assembly circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3135 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 B3135 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 B3135 Cadillac Code
1. What are the common symptoms of OBDII code B3135 Cadillac related to the All Doors Lock Circuit?
- Common symptoms include issues with central locking system, doors not locking or unlocking properly, and warning lights on the dashboard.
2. What are the possible causes of OBDII code B3135 Cadillac?
- Possible causes include faulty door lock actuators, damaged wiring or connectors, issues with the central locking module, or a blown fuse related to the door locks.
3. How can I diagnose the All Doors Lock Circuit issue causing OBDII code B3135 in my Cadillac?
- A diagnostic scan tool can help pinpoint the specific door or circuit causing the problem. Additionally, visual inspection of wiring and connectors for damage can be beneficial.
4. Can I still drive my Cadillac with OBDII code B3135 present?
- While it may be possible to drive the vehicle with this code, it is recommended to address the issue promptly to avoid potential safety concerns or further electrical problems.
5. How can I repair the All Doors Lock Circuit issue associated with OBDII code B3135 in my Cadillac?
- Repair steps may involve replacing faulty door lock actuators, repairing damaged wiring or connectors, checking and replacing fuses if necessary, or resetting the central locking module.
6. Are there any DIY tips for troubleshooting OBDII code B3135 in a Cadillac?
- DIY tips include checking for blown fuses, inspecting wiring for visible damage, and testing door lock actuators manually to determine if they are functioning correctly.
7. What should I do if I continue to experience issues after repairing the All Doors Lock Circuit problem causing OBDII code B3135?
- If problems persist, it may be necessary to seek assistance from a qualified automotive technician to diagnose any underlying issues with the central locking system.
8. Is it possible for OBDII code B3135 in a Cadillac to reoccur after repairs have been made?
- Yes, if the root cause of the issue was not fully addressed or if there are additional underlying problems with the door lock circuit, the code may reappear.
9. Can a weak car battery cause OBDII code B3135 related to the All Doors Lock Circuit in a Cadillac?
- A weak car battery can potentially contribute to electrical issues, including problems with the central locking system, so it's important to ensure the battery is in good condition.
10. How long does it typically take to repair the All Doors Lock Circuit problem causing OBDII code B3135 in a Cadillac?
- The repair time can vary depending on the specific issue, but it may take anywhere from a few hours to a full day to diagnose and fix the problem, especially if wiring repairs or component replacements are needed.
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