AutoCodes – Chevrolet – B3133 Chevrolet

B3133 Chevrolet Code - All Door Unlock Circuit High

Quick Answer

The outputs to the door lock actuators are controlled by the Body Control Module (BCM). Common causes include Faulty Inoperative Door Lock Actuator, Inoperative Door Lock Actuator harness is open or shorted, Inoperative Door Lock Actuator 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: B3133 Chevrolet indicates All Door Unlock Circuit High.
Common causes: Common causes include Faulty Inoperative Door Lock Actuator, Inoperative Door Lock Actuator harness is open or shorted, Inoperative Door Lock Actuator 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.

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Code Popularity 1,425

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3133 Chevrolet Description

The outputs to the door lock actuators are controlled by the Body Control Module (BCM). When the BCM receives a lock input from a door lock switch, or a keyless entry transmitter, it applies battery positive voltage to the door lock actuator lock control circuit, a ground to the door lock actuator unlock control, and the driver door lock actuator unlock control circuits. When the BCM receives an unlock input from a door lock switch, it applies battery positive voltage to the door lock actuator unlock control, the driver door lock actuator unlock control circuits, and a ground to the door lock actuator lock control circuit. When the BCM receives an single Unlock input from a keyless entry transmitter, it applies battery positive voltage to the driver door lock actuator unlock control circuit and a ground to the door lock actuator lock control circuit to unlock the driver door. A second Unlock input from the transmitter applies battery positive voltage to the door lock actuator unlock control circuit, and a ground to the door lock actuator lock control circuit to unlock the passenger doors.

OBDII Code B3133 Chevrolet - All Door Unlock Circuit High - AutoCodes.com — B3133 Chevrolet Code - All Door Unlock Circuit High

What does this mean?

What are the Possible Causes of the DTC B3133 Chevrolet?

Faulty Inoperative Door Lock Actuator
Inoperative Door Lock Actuator harness is open or shorted
Inoperative Door Lock Actuator circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3133 Chevrolet?

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 B3133 Chevrolet 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B3133 Chevrolet Code

1. What are the common symptoms of OBDII code B3133 Chevrolet (All Door Unlock Circuit High)?

- Common symptoms include all doors not unlocking when using the remote key fob or central locking button, and potential issues with the power door locks.

2. What are the possible causes of the All Door Unlock Circuit High code in a Chevrolet vehicle?

- Causes may include a faulty door lock actuator, damaged wiring in the door harness, a malfunctioning body control module (BCM), or a problem with the keyless entry system.

3. How can I diagnose the B3133 Chevrolet trouble code related to the All Door Unlock Circuit High?

- Use a diagnostic scanner to retrieve the specific trouble code, inspect the door lock actuators for proper function, and check the wiring for any visible damage or corrosion.

4. What should I do if my Chevrolet is displaying the B3133 code for the All Door Unlock Circuit High?

- Start by checking the fuse related to the power door locks, followed by inspecting the door lock actuators, wiring, and connections for any issues. If necessary, seek professional help for further diagnosis and repair.

5. Can a DIY enthusiast repair the B3133 Chevrolet code on their own?

- Depending on the underlying cause, a DIY enthusiast with experience in automotive electrical systems may be able to address issues like faulty wiring or door lock actuators. However, complex BCM or keyless entry system problems may require professional assistance.

6. Is it safe to continue driving my Chevrolet with the B3133 All Door Unlock Circuit High code?

- While the code itself may not pose an immediate safety risk, having malfunctioning power door locks can compromise the security and convenience of your vehicle. It's recommended to address the issue promptly.

7. How much does it typically cost to repair the B3133 Chevrolet trouble code?

- The cost of repair can vary depending on the specific cause of the code and whether professional help is needed. Simple fixes like replacing a fuse or a door lock actuator may be relatively inexpensive, while more complex issues could incur higher costs.

8. Can resetting the BCM resolve the B3133 Chevrolet code related to the All Door Unlock Circuit High?

- Resetting the BCM (Body Control Module) may temporarily clear the code, but if the underlying issue persists, the code is likely to reappear. It's important to diagnose and address the root cause of the problem for a lasting solution.

9. Are there any preventive measures to avoid encountering the B3133 Chevrolet trouble code in the future?

- Regularly inspecting the condition of your vehicle's door lock actuators, wiring, and connections can help prevent issues that may trigger the All Door Unlock Circuit High code. Additionally, following proper maintenance schedules can aid in early detection of potential problems.

10. Will the B3133 Chevrolet code affect other electrical systems in my vehicle?

- While the code specifically relates to the All Door Unlock Circuit, it's possible that underlying electrical issues could impact other systems controlled by the BCM. If you notice any unusual behavior in other electrical components, it's advisable to have the vehicle inspected for related issues.