B3103 Buick 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 Buick 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.
Code B3103 Buick Description
What are the Possible Causes of the DTC B3103 Buick?
- 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 Buick?
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 Buick 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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Frequently Asked Questions about B3103 Buick Code
1. What does the OBDII code B3103 mean for a Buick?
The B3103 code indicates a "Keyless Entry Data Link Circuit High" fault, meaning there is an issue with the signal or voltage in the keyless entry data link circuit.
2. What are the common symptoms of a B3103 code in a Buick?
Symptoms may include the key fob not working, inability to lock/unlock doors remotely, or a malfunctioning keyless entry system.
3. What causes the B3103 code to appear?
Common causes include a faulty keyless entry module, damaged wiring or connectors in the circuit, or interference from aftermarket devices.
4. Can a weak key fob battery trigger the B3103 code?
No, a weak key fob battery typically won’t trigger the B3103 code, but it can cause keyless entry issues that may seem related.
5. How is the B3103 code diagnosed?
A technician will use a scan tool to confirm the code, inspect the keyless entry module, check wiring and connectors for damage, and test the circuit for high voltage.
6. Can the B3103 code cause other systems to malfunction?
Yes, since the keyless entry system interacts with the body control module (BCM), it could potentially affect other related systems, such as remote start or alarm functions.
7. Is it safe to drive with the B3103 code active?
Yes, it’s generally safe to drive, but you may lose functionality of the keyless entry system until the issue is resolved.
8. How do you fix the B3103 code?
Repairs may include replacing damaged wiring, repairing or replacing the keyless entry module, or reprogramming the module if necessary.
9. Can a software update fix the B3103 code?
In some cases, a software update for the body control module (BCM) or keyless entry module can resolve the issue if it’s related to a programming glitch.
10. What tools are needed to troubleshoot the B3103 code?
You’ll typically need an OBDII scanner, a multimeter to test voltage and continuity, and possibly a wiring diagram for the keyless entry system.
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