AutoCodes – Chevrolet – B3102 Chevrolet

B3102 Chevrolet Code - Keyless Entry Data Link Circuit Low

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: B3102 Chevrolet indicates Keyless Entry Data Link Circuit Low.
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 3,393

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3102 Chevrolet 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. The Diagnostic Trouble Code (DTC) sets when the keyless entry serial data circuit is shorted to ground.

OBDII Code B3102 Chevrolet - Keyless Entry Data Link Circuit Low - AutoCodes.com — B3102 Chevrolet Code - Keyless Entry Data Link Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3102 Chevrolet?

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 B3102 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 B3102 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 B3102 Chevrolet Code

What does the OBDII code B3102 mean for a Chevrolet vehicle?

B3102 indicates a problem with the keyless entry data link circuit, specifically that the circuit is reading low voltage or is not functioning properly.

What are common symptoms of a B3102 code?

Common symptoms include the keyless entry system not working, problems with remote unlocking or locking the doors, and potential issues with the vehicleâ€™s alarm system.

What could cause the B3102 code to trigger?

Causes can include a faulty keyless entry module, damaged wiring or connectors, a weak or dead key fob battery, or issues with the body control module (BCM).

How can I diagnose a B3102 code?

Start by checking the key fob battery and replacing it if necessary. Then inspect the wiring and connectors for damage or corrosion. If those are fine, use a scan tool to check for additional codes and test the keyless entry module.

What repairs are needed for a B3102 code?

Repairs may involve replacing a faulty keyless entry module, repairing damaged wiring, or reprogramming the BCM. In some cases, simply replacing the key fob battery can resolve the issue.

Is it safe to drive with a B3102 code?

While the B3102 code specifically affects the keyless entry system, it does not typically affect the vehicleâ€™s overall drivability. However, itâ€™s advisable to address the issue to ensure the functionality of your keyless entry system.

Can I clear the B3102 code myself?

Yes, you can clear the code using an OBDII scanner after addressing any underlying issues. However, if the problem persists, the code will likely return.

What tools do I need to fix the B3102 code?

Essential tools include an OBDII scanner for diagnostics, a multimeter for testing voltage, and basic hand tools for any wiring or module replacement.

Will a dead key fob battery cause a B3102 code?

Yes, a dead key fob battery can prevent the keyless entry system from functioning, potentially triggering the B3102 code. Replacing the battery is a good first step in troubleshooting.

How can I prevent a B3102 code from occurring in the future?

Regularly check and replace key fob batteries, keep wiring connections clean and free of corrosion, and ensure that any updates or repairs to the vehicleâ€™s electrical system are done properly to maintain the integrity of the keyless entry system.