AutoCodes – Generic – B3152

B3152 Code - Left Front Lock Switch Circuit Low

Quick Answer

The switch that failed and generated the Diagnostic Trouble Code (DTC) is wired to either the Driver Door Switch Assembly (DDSA) or the Passenger Front Door Module (PDM). Common causes include Faulty Left Front Power Door Lock Switch, Left Front Power Door Lock Switch harness is open or shorted, Left Front Power Door Lock Switch 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: B3152 indicates Left Front Lock Switch Circuit Low.
Common causes: Common causes include Faulty Left Front Power Door Lock Switch, Left Front Power Door Lock Switch harness is open or shorted, Left Front Power Door Lock Switch 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 2,536

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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 B3152 Description

The switch that failed and generated the Diagnostic Trouble Code (DTC) is wired to either the Driver Door Switch Assembly (DDSA) or the Passenger Front Door Module (PDM). When a door lock switch is activated to the Lock or Unlock function, the DDSA or PDM receives the switch input and sends the information on, via the Serial Data Class 2 communications line, to the Rear Integration Module (RIM), which is the master of all lock operations. If the RIM determines that the message is a valid request and conditions are correct for a door lock function to occur, it sends its OK back to all the door modules to Lock or Unlock the doors. Each door module supplies power and ground to its associated lock actuator to Lock or Unlock the associated door.

OBDII Code B3152 - Left Front Lock Switch Circuit Low - AutoCodes.com — B3152 Code - Left Front Lock Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3152?

Faulty Left Front Power Door Lock Switch
Left Front Power Door Lock Switch harness is open or shorted
Left Front Power Door Lock Switch circuit poor electrical connection
Faulty Driver Door Switch Assembly (DDSA)

How to Fix the DTC B3152?

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 B3152 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 B3152 code?

Need more information on how to fix the B3152 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3152 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3152 Buick — Left Front Lock Switch Circuit Low
B3152 Cadillac — Left Front Lock Switch Circuit Low
B3152 Chevrolet — Left Front Lock Switch Circuit Low
B3152 GMC — Left Front Lock Switch Circuit Low

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 B3152 Code

1. What does OBDII code B3152 mean?

Code B3152 indicates a low voltage issue in the left front lock switch circuit, typically related to the vehicle's door lock system.

2. What are the common symptoms of code B3152?

Symptoms may include the left front door lock not functioning properly, intermittent locking or unlocking, or the door lock switch not responding.

3. What causes OBDII code B3152 to be triggered?

This code can be caused by a faulty door lock switch, damaged wiring, a poor electrical connection, or a malfunctioning door lock actuator.

4. How do I diagnose code B3152?

Start by inspecting the wiring and connectors for the left front door lock switch. Use a multimeter to check for continuity and measure voltage in the circuit.

5. Can I still drive with code B3152 active?

Yes, the vehicle is drivable, but the left front door lock may not function as intended, potentially impacting security and convenience.

6. How do I fix code B3152?

Repairs may include replacing the left front door lock switch, repairing or replacing damaged wiring, or addressing poor electrical connections.

7. How much does it cost to fix code B3152?

The repair cost depends on the specific issue but typically ranges from $50 to $200 for parts and labor.

8. Can a dead battery cause code B3152?

A weak or dead battery is unlikely to cause this specific code but could contribute to electrical issues if the voltage is unstable.

9. Will clearing the code fix the problem?

Clearing the code without addressing the underlying issue will not resolve the problem, and the code is likely to return.

10. Can I troubleshoot code B3152 myself?

Yes, if you have basic knowledge of automotive electrical systems, you can inspect wiring, connectors, and the door lock switch, but more complex repairs may require professional assistance.