AutoCodes – Cadillac – B3103 Cadillac

B3103 Cadillac Code - Keyless Entry Data Link Circuit High

Quick Answer

The Remote Control Door Lock Receiver (RCDLR) communicates with the Body Control Module (BCM) through the keyless entry serial data circuit. Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver (RCDLR) harness is open or shorted, Remote Control Door Lock Receiver (RCDLR) 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
B3103 Cadillac indicates Keyless Entry Data Link Circuit High.
Common causes
Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver (RCDLR) harness is open or shorted, Remote Control Door Lock Receiver (RCDLR) 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 554
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 03, 2020
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Code B3103 Cadillac Description

The Remote Control Door Lock Receiver (RCDLR) communicates with the Body Control Module (BCM) through the keyless entry serial data circuit. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a lock, unlock, rear release, or panic alarm request to the BCM, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. The BCM also uses the keyless entry serial data circuit in order to communicate with the RCDLR when programming transmitters.
OBDII Code B3103 Cadillac - Keyless Entry Data Link Circuit High - AutoCodes.com
B3103 Cadillac Code - Keyless Entry Data Link Circuit High

What are the Possible Causes of the DTC B3103 Cadillac?

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

How to Fix the DTC B3103 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 B3103 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.

Need more information about the B3103 Cadillac code?

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Need Help with the Code?

Get the B3103 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 B3103 Cadillac Code

1. What are the common symptoms of OBDII code B3103 in a Cadillac related to the Keyless Entry Data Link Circuit High?

- Common symptoms include issues with the keyless entry system, such as the key fob not working properly or the vehicle not recognizing the key.

2. What are the possible causes of OBDII code B3103 in a Cadillac indicating a Keyless Entry Data Link Circuit High?

- Possible causes include wiring issues, a faulty key fob, a malfunctioning receiver module, or a problem with the vehicle's control module.

3. How can I diagnose OBDII code B3103 in a Cadillac related to the Keyless Entry Data Link Circuit High?

- Diagnose the issue by checking the wiring connections, testing the key fob, inspecting the receiver module, and using a diagnostic scan tool to read the code.

4. Are there any DIY repair tips for fixing OBDII code B3103 in a Cadillac due to a Keyless Entry Data Link Circuit High?

- DIY repair tips may include checking and repairing any damaged wiring, replacing the key fob battery, or resetting the vehicle's control module.

5. Can OBDII code B3103 in a Cadillac be cleared/reset, or does it require professional intervention?

- This code can typically be cleared/reset using a diagnostic scan tool. If the issue persists after clearing the code, professional intervention may be needed.

6. How serious is OBDII code B3103 in a Cadillac related to the Keyless Entry Data Link Circuit High?

- While this code may not affect the drivability of the vehicle, it can impact the convenience and functionality of the keyless entry system.

7. Is it safe to continue driving a Cadillac with OBDII code B3103 indicating a Keyless Entry Data Link Circuit High?

- It is generally safe to continue driving, but it is recommended to address the issue promptly to avoid any inconvenience with the keyless entry system.

8. How much does it typically cost to repair OBDII code B3103 in a Cadillac caused by a Keyless Entry Data Link Circuit High?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement and labor fees.

9. Can weather conditions or environmental factors trigger OBDII code B3103 in a Cadillac related to the Keyless Entry Data Link Circuit High?

- Extreme weather conditions or exposure to moisture can potentially cause issues with the keyless entry system, leading to the activation of this fault code.

10. Are there any preventive measures to avoid encountering OBDII code B3103 in a Cadillac due to a Keyless Entry Data Link Circuit High in the future?

- Regularly checking the condition of the key fob, ensuring proper wiring connections, and keeping the keyless entry system clean and dry can help prevent this issue from occurring.

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