2017-2022 Honda CR-V Active Noise Cancellation Module: Fixing Speaker Buzz and Hum
This guide covers the common symptoms, replacement costs, and compatibility details for the Active Noise Cancellation (ANC) module in 2017-2022 Honda CR-V models.
- The most common sign of failure is a loud humming, buzzing, or booming noise from the speakers that occurs even when the radio is off.
- As a temporary fix or diagnostic step, you can simply unplug the module located behind the glove box to stop the noise.
- Before buying a used module, verify the part number is 39200-TLA-A51 and confirm it matches your vehicle's options (satellite radio, and 1.5L engine for 2020-2022 models).
- A replacement module may require programming by a Honda dealer to ensure full functionality, though it often works as a plug-and-play part.
Symptoms of a Failing ANC Module
When the Active Noise Cancellation module in a 2017-2022 Honda CR-V begins to fail, the symptoms are almost always audible. Because the system is tied directly into the vehicle's speakers, you will notice unusual sounds that are often distracting and annoying.
Common Failure Symptoms:
- Loud Humming, Buzzing, or Booming from Speakers: This is the most reported symptom. A constant low-frequency hum or a loud, intermittent booming noise may come from the speakers. This can happen at various speeds, but is often noted at highway speeds, and occurs even when the radio is turned off.
- Static or Crackling Noises: Some owners report hearing static or crackling sounds that can start and stop randomly, often beginning once the vehicle reaches a certain speed, like 40 MPH.
- Rumbling Sound with Aftermarket Subwoofers: If you have installed an aftermarket subwoofer, a faulty ANC module can cause a strange rumbling or feedback loop. The module's microphones pick up the subwoofer's bass as road noise and try to cancel it, creating a disruptive sound. 🎬 See how to bypass the ANC to fix subwoofer rumbling
Pro Tip: A simple way to diagnose a faulty ANC module is to unplug it. If the strange noises stop immediately, the module is almost certainly the cause of the problem. Unplugging the module will not affect Bluetooth phone calls or normal radio operation, but the cabin may seem slightly louder without the noise cancellation active.
🎬 Watch: How to disconnect the ANC module on a 5th Gen CR-VKnown Issues, TSBs, and Recalls
While there are no specific recalls for the ANC module itself on the 2017-2022 CR-V, Honda has issued Technical Service Bulletins (TSBs) for similar issues on other models, which can provide valuable insight.
- TSB 21-053 (Accord Hybrid): This bulletin addresses a booming or humming noise from the speakers on 2018-2020 Accord Hybrids. The cause is identified as outdated software in the ANC unit, and the corrective action is to replace the module. This indicates 🎬 Watch: Diagnosing the Accord Hybrid humming noise under TSB 21-053 that failures can be software-related and not just hardware-based.
- TSB 22-014 (Accord/Insight): For some Accord and Insight models, a booming or rumbling sound was traced back to damaged or folded insulating foam on the ANC microphones in the headliner, not the module itself. While less common, it's a possibility to consider during diagnosis.
- Infotainment System Lawsuit: A lawsuit has been filed concerning popping and crackling noises in the infotainment systems of various 2020 and newer Honda models. The issue is attributed to loose connections in the MOST (Media Oriented System Transport) network, which can affect all audio functions.
There have been several recalls for the 2017-2022 CR-V, but none are directly related to the ANC module. Recalls have been issued for issues like faulty seat weight sensors, incorrect certification labels, and fuel pump failures.
Buying a Used Active Noise Cancellation Module
Purchasing a used OEM ANC module is a cost-effective way to solve noise issues. Since these units are purely electronic and have no moving parts, a tested part from a reputable recycler can be just as reliable as a new one.
Verification and Compatibility:
- Match the Part Number: The most critical step is to match the OEM part number exactly. The primary part number for this generation of CR-V is 39200-TLA-A51. You may also see variants like 39200-TLA-A511-M1. Do not install a module with a different part number, even if it looks identical.
- Check Vehicle Options: This module is intended for models equipped with satellite radio. For model years 2020-2022, ensure the part is from a vehicle with the 1.5L Turbo engine, as it is not compatible with Hybrid models.
- Physical Inspection: When you receive the used part, inspect the casing for any cracks or signs of being opened. Check the connector pins to ensure they are straight, clean, and free of any corrosion, which would indicate water damage.
Programming and Installation
Replacing the ANC module is a straightforward process that most DIY mechanics can perform.
Location:
The ANC module is located behind the glove box on the passenger side of the dashboard. To access it, you will typically need to:
- Remove the side dash cover panel.
- Remove the glove box assembly, which is usually held in by a few screws.
- The ANC module is a small silver or black box bolted to a support beam. It can be unplugged and unbolted.
Programming Requirements:
Warning: While some users report success with a simple plug-and-play replacement, official Honda procedures for other models with similar issues often call for replacing the unit, which implies a software update may be necessary. There is a possibility that the replacement module may need to be programmed or synchronized with the vehicle by a Honda dealer or a qualified independent shop with advanced diagnostic tools like an Autel. If you install a used module and it does not function correctly, a dealer visit for software synchronization may be required.
Cost Breakdown
The cost to replace an ANC module can vary significantly depending on the source of the part and who performs the labor.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $115 - $175 |
| Used OEM | $45 - $75 |
| Shop Labor | $100 - $200 |
Frequently Asked Questions (FAQ)
Can I just unplug the ANC module to fix the speaker noise?
Yes. Unplugging the ANC module is a common and effective way to stop the humming or buzzing noise. This is often done as a diagnostic step or as a permanent solution by those who install aftermarket subwoofers. The only side effect is that the active noise cancellation feature will be disabled.
Where is the ANC module located on a 2017-2022 Honda CR-V?
The ANC module is located behind the glove box on the passenger side. You will need to remove the glove box assembly to access the module, which is a small electronic box with a single wiring connector.
Does a replacement ANC module need to be programmed?
It might. While many owners have success simply swapping the part, Honda service bulletins for similar issues on other models suggest a replacement unit may have updated software. If a used module doesn't work correctly after installation, it may need to be programmed to the vehicle by a dealer or a shop with Honda-specific diagnostic tools.
Will a bad ANC module throw a check engine light or OBD-II code?
A failing ANC module typically does not trigger the check engine light. Any diagnostic trouble codes (DTCs) associated with the ANC system would be proprietary Body or Communication codes (B- or U-codes) that can only be read by a more advanced scan tool, not a basic OBD-II code reader.
Helpful Videos
Technical Specifications
OEM Part Numbers: 39200-TLA-A51 39200TLAA51 39200-TLA-A511-M1
The module is designed for models with satellite radio. For 2020-2022 models, it is specific to the 1.5L L4 Gas engine and excludes Hybrid models.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Honda CR-V:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing ANC Module
- Common Failure Symptoms:
- Known Issues, TSBs, and Recalls
- Buying a Used Active Noise Cancellation Module
- Verification and Compatibility:
- Programming and Installation
- Location:
- Programming Requirements:
- Cost Breakdown
- Frequently Asked Questions (FAQ)
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