AutoCodesGeneric – B10C9

B10C9 Code - Interior Front Antenna Circuit Intermittent

Quick Answer

The Remote Function Actuator (RFA) Module interprets radio frequency signals from the Remote Functions Receiver (RFR) Module and Intelligent Access (IA) key transmitters. Common causes include Faulty Interior Front Antenna, Interior Front Antenna harness is open or shorted, Interior Front Antenna circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
B10C9 indicates Interior Front Antenna Circuit Intermittent.
Common causes
Common causes include Faulty Interior Front Antenna, Interior Front Antenna harness is open or shorted, Interior Front Antenna circuit poor electrical connection.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code Popularity 3,889
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2024
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Code B10C9 Description

The Remote Function Actuator (RFA) Module interprets radio frequency signals from the Remote Functions Receiver (RFR) Module and Intelligent Access (IA) key transmitters. The RFA module receives input signals from various modules and other components. Based on this information, the RFA module generates an output signal to control various components such as the door locks and the liftgate. The OBDII code sets when the RFA module detects an open, short to ground, or short to voltage from one of the front passive start antenna circuits.
OBDII Code B10C9 - Interior Front Antenna Circuit Intermittent - AutoCodes.com
B10C9 Code - Interior Front Antenna Circuit Intermittent

What are the Possible Causes of the DTC B10C9?

  • Faulty Interior Front Antenna
  • Interior Front Antenna harness is open or shorted
  • Interior Front Antenna circuit poor electrical connection
  • Faulty Remote Function Actuator (RFA) Module

How to Fix the DTC B10C9?

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 B10C9 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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Information for Specific Makes

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 B10C9 Code

1. What does the OBDII code B10C9 mean?

B10C9 indicates an intermittent issue with the interior front antenna circuit, which is often part of the vehicle's keyless entry or push-to-start system.

2. What are the common symptoms of the B10C9 code?

Symptoms may include difficulty starting the vehicle with a push-button start, intermittent keyless entry issues, or the vehicle not detecting the key fob.

3. What causes the B10C9 code to appear?

Common causes include a faulty interior front antenna, damaged wiring or connectors, interference from other electronic devices, or a malfunctioning key fob.

4. How can I diagnose the B10C9 code?

Start by inspecting the antenna and its wiring for damage or loose connections, check for interference sources, and test the key fob's signal strength and battery.

5. Can a low key fob battery trigger the B10C9 code?

Yes, a weak or dead key fob battery can cause intermittent communication issues, leading to this code.

6. Is the B10C9 code serious?

While it may not immediately affect drivability, it can prevent the vehicle from starting, making it essential to address promptly.

7. How do I fix the B10C9 code?

Repairs may include replacing the interior front antenna, repairing damaged wiring, or reprogramming or replacing the key fob.

8. Can I clear the B10C9 code without fixing the issue?

You can clear the code with a scan tool, but it will likely return if the underlying problem isn’t resolved.

9. What tools are needed to troubleshoot the B10C9 code?

You’ll need an OBDII scan tool, a multimeter for testing circuits, and possibly a key fob tester or signal analyzer.

10. Can interference from electronic devices cause the B10C9 code?

Yes, strong electromagnetic interference from devices like cell phones or radio transmitters can disrupt the antenna circuit and trigger the code.

Discuss the causes and fixes for B10C9 OBDII Code

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