AutoCodesCadillac – B3106 Cadillac

B3106 Cadillac Code - Keyless Entry Data Link

Quick Answer

The Body Control Module (BCM) communicates with the Remote Control Door Lock Receiver (RCDLR) through the keyless entry serial data circuits. Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver harness is open or shorted, Remote Control Door Lock Receiver 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
B3106 Cadillac indicates Keyless Entry Data Link.
Common causes
Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver harness is open or shorted, Remote Control Door Lock Receiver 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 557
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 11, 2023
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Code B3106 Cadillac Description

The Body Control Module (BCM) communicates with the Remote Control Door Lock Receiver (RCDLR) through the keyless entry serial data circuits. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a function request to the body control module, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. The Diagnostic Trouble Code (DTC) will be set when the transmitter that is sending a signal to the RCDLR is different from those transmitters stored in the BCM.
OBDII Code B3106 Cadillac - Keyless Entry Data Link - AutoCodes.com
B3106 Cadillac Code - Keyless Entry Data Link

What are the Possible Causes of the DTC B3106 Cadillac?

  • Faulty Remote Control Door Lock Receiver (RCDLR)
  • Remote Control Door Lock Receiver harness is open or shorted
  • Remote Control Door Lock Receiver circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3106 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 B3106 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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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 B3106 Cadillac Code

1. What does the OBDII code B3106 mean on a Cadillac?

The code B3106 indicates an issue with the Keyless Entry Data Link, often related to communication problems between the keyless entry system and the vehicle's control modules.

2. What are common symptoms of code B3106 on a Cadillac?

Common symptoms include the key fob not locking or unlocking the doors, difficulty starting the vehicle with the push-button start, or the keyless entry system being unresponsive.

3. What causes the B3106 code to appear in a Cadillac?

This code can be triggered by a malfunctioning key fob, a damaged antenna or receiver, wiring issues, or a problem with the Body Control Module (BCM).

4. Can a weak key fob battery cause the B3106 code on a Cadillac?

Yes, a weak or dead key fob battery can cause communication issues, potentially triggering the B3106 code.

5. How do I diagnose the B3106 code on a Cadillac?

Diagnosis involves checking the key fob battery, inspecting the antenna and wiring for damage, and using a scan tool to monitor communication between the keyless entry system and control modules.

6. Can I still drive my Cadillac with the B3106 code active?

Yes, you can usually drive the vehicle, but keyless entry features like locking, unlocking, or starting the car may be impaired.

7. How do I fix the B3106 code on a Cadillac?

Fixes may include replacing the key fob battery, repairing damaged wiring, reprogramming the key fob, or replacing the antenna or BCM if faulty.

8. How much does it cost to repair the B3106 code on a Cadillac?

The cost varies depending on the issue, ranging from a few dollars for a key fob battery replacement to several hundred dollars for BCM or antenna repairs.

9. Can the B3106 code be cleared without repairs?

The code can be cleared temporarily with a scan tool, but if the underlying issue isn’t resolved, it will likely return.

10. Is the B3106 code common on Cadillac vehicles?

While not extremely common, it can happen, especially in older vehicles or if the keyless entry system components are worn or damaged.

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