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AutoCodes – Generic – B3133

B3133 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 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 1,245
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Mar 04, 2020
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Code B3133 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 - All Door Unlock Circuit High - AutoCodes.com
B3133 Code - All Door Unlock Circuit High
What does this mean?

What are the Possible Causes of the DTC B3133?

  • 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?

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 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.

Need more information about the B3133 code?

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Need Help with the Code?

Get the B3133 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 Code

1. What does the OBDII code B3133 mean?

B3133 indicates that the vehicle’s control module has detected a high voltage condition in the all-door unlock circuit.

2. What are the common symptoms of the B3133 code?

Symptoms may include all doors failing to unlock, intermittent door unlocking, or no response from the door lock/unlock buttons.

3. What causes the B3133 code to appear?

Common causes include a short circuit, damaged wiring, a faulty door lock actuator, or a malfunctioning door lock control module.

4. Can a blown fuse trigger the B3133 code?

Yes, a blown fuse in the door lock circuit can cause the system to malfunction and trigger the B3133 code.

5. How do I diagnose the B3133 code?

Start by inspecting the wiring and connections in the door lock circuit for damage or corrosion. Use a multimeter to check for proper voltage and continuity.

6. How can I fix the B3133 code?

Repairs may involve replacing damaged wiring, fixing a short circuit, replacing a faulty door lock actuator, or reprogramming the control module if necessary.

7. Can I still drive my car with the B3133 code?

Yes, but you may experience inconvenience with door locking and unlocking functionality, which could impact vehicle security.

8. How much does it cost to repair the B3133 code?

Repair costs can vary widely depending on the issue. Wiring repairs might cost $50–$150, while replacing a door lock actuator could range from $150–$300.

9. Can a weak car battery cause the B3133 code?

A weak or failing car battery is unlikely to directly cause this code but could potentially affect the functionality of the door lock system.

10. Do I need to reset the code after repairs?

Yes, after completing the repairs, use an OBDII scanner to clear the code and verify that it does not return.

Discuss the causes and fixes for B3133 OBDII Code

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