U0104 on 2024-2026 Honda CR-V — Lost Communication With Cruise Control Module
1 vehicles · 1 makes · $600-$1,200 repair
How to diagnose and fix U0104: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Honda CR-V · 2024–2026
The millimeter-wave radar module for adaptive cruise control and the Collision Mitigation Braking System sits directly behind the Honda 'H' emblem in the CR-V's front grille, retained only by clips. Thieves pop the emblem and pull the sensor in under a minute; the modules resell for a few hundred dollars while dealer replacement plus aiming runs many times that. Multiple 2026 CR-V owners filed NHTSA complaints after repeat thefts — one owner had the sensor stolen, replaced, and stolen again. Dealers have reported mass overnight hits on their own lots. The car still drives, but ACC, CMBS, low-speed braking control and the road-departure functions go dark and the dashboard fills with driver-assist failure messages, and replacement modules have been on backorder.
Common Symptoms
- Honda emblem missing or hanging off the front grille
- Adaptive cruise control unavailable message
- Collision Mitigation Braking System problem warning at startup
- Multiple driver-assist failure messages after a parking-lot stop
- Empty bracket visible behind the grille badge
How to Fix
Fit an aftermarket steel radar shield/bracket that sandwiches the sensor with security fasteners behind the emblem — these are model-specific for the 6th-gen CR-V and cost a fraction of a replacement. Park with the nose in against a wall or another vehicle where possible, and add a front-facing camera. If the sensor is already gone, comprehensive auto insurance normally covers it as theft; budget roughly $600-$1,200 for the module plus the mandatory radar aiming procedure, and expect a parts wait. Do not drive assuming Honda Sensing will intervene once the module is missing — all radar-based functions are inoperative.
Sources for this issue (2)
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U0104 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U0104 mean?
U0104 stands for "Lost Communication With Cruise Control Module." Sets when a module loses data-bus communication with the Cruise Control Module and stops receiving its expected messages. On many modern vehicles this also affects adaptive cruise/driver-assist features.
What are the most common causes of U0104?
The most common causes of U0104 are: Open or shorted bus wiring to the cruise control module, Corroded or loose connector at the module, Blown fuse / lost power or ground, Low battery voltage, Failed cruise control module. The specific cause varies by vehicle.
How much does it cost to fix U0104?
Repair costs for U0104 range from $600 to $1,200, depending on the vehicle and root cause.
Which vehicles are affected by U0104?
Au7o has documented U0104 across 1 vehicle models from 1 manufacturers: Honda.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.