B3135 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 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 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?
- 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?
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 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
- B3135 Buick — All Doors Lock Circuit
- B3135 Cadillac — All Doors Lock Circuit
- B3135 Chevrolet — All Doors Lock Circuit
- B3135 GMC — All Doors Lock Circuit
Frequently Asked Questions about B3135 Code
1. What are the common symptoms of OBDII code B3135 All Doors Lock Circuit?
- Common symptoms may include all doors failing to lock or unlock using the central locking system, erratic door locking behavior, or warning lights on the dashboard.
2. What are the possible causes of OBDII code B3135 All Doors Lock Circuit?
- Possible causes include a malfunctioning door lock actuator, damaged wiring or connectors in the door lock circuit, a faulty central locking control module, or a blown fuse.
3. How can I diagnose the issue related to OBDII code B3135 All Doors Lock Circuit?
- Diagnose the issue by visually inspecting the door lock actuators, checking the wiring and connectors for damage, testing the central locking control module, and using a diagnostic scan tool to retrieve specific error codes.
4. Can I repair OBDII code B3135 All Doors Lock Circuit issue myself?
- Depending on your skill level, you may be able to repair the issue yourself by replacing a faulty door lock actuator, repairing damaged wiring, or resetting the central locking control module. However, more complex issues may require professional assistance.
5. Are there any temporary fixes for OBDII code B3135 All Doors Lock Circuit?
- In some cases, a temporary fix may involve manually locking or unlocking the doors until the underlying issue is properly diagnosed and repaired.
6. How important is it to address OBDII code B3135 All Doors Lock Circuit immediately?
- Addressing the issue promptly is important to ensure the safety and security of your vehicle. Ignoring the problem may lead to difficulties in accessing or securing your vehicle.
7. Can OBDII code B3135 All Doors Lock Circuit cause other problems in my vehicle?
- While the code itself may not directly cause other problems, a malfunctioning door lock circuit can affect the overall security and convenience of your vehicle, potentially leading to related issues.
8. How much does it typically cost to repair OBDII code B3135 All Doors Lock Circuit?
- The cost of repair can vary depending on the specific cause of the issue, parts needed, and labor costs. It is recommended to obtain quotes from different mechanics or repair shops for an accurate estimate.
9. Is it safe to continue driving with OBDII code B3135 All Doors Lock Circuit unresolved?
- It is generally not recommended to continue driving with unresolved door lock circuit issues, as it may compromise the security of your vehicle. Addressing the problem promptly is advised.
10. Can extreme weather conditions affect OBDII code B3135 All Doors Lock Circuit?
- Extreme weather conditions, such as extreme cold or heat, can potentially affect the performance of door lock actuators and other components in the circuit, leading to issues related to OBDII code B3135.
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