U0104 — Lost Communication With Cruise Control Module

Q: "What causes communication codes?"

"Usually a wiring issue, corroded connector, failed module, or dead battery. The CAN bus network connects all your car's computers."

Q: "Can a bad battery cause network codes?"

"Yes. Low voltage can cause communication failures between modules. Always check battery health first — it's the cheapest potential fix."

What Does U0104 Mean?

U0104 is a diagnostic trouble code indicating: Lost Communication With Cruise Control Module. This code relates to the network communication system. It has been reported in NHTSA complaints across 2 different vehicle models.

Common Causes

🔍 Sensor or control module malfunction

U0104 Reports by Year

2025

1

2023

1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"The contact owns a 2017 Honda Pilot. The contact stated while driving at an undisclosed speed, the vehicle inadvertently drifted into another lane. The contact also stated that while driving, the vehicle stopped independently. Additionally, the contact stated that while driving at an undisclosed spe"
— Honda Pilot owner, 02/13/2023

"All the safety systems randomly disable themselves while driving and throw this code. Next time the vehicle starts, sometimes they are gone, then come back while driving, other times they are there from the start. U0104(00) [0xC10400] Data bus, cruise control module - no communication"
— Honda Odyssey owner, 05/16/2025

Source: NHTSA Complaints Database

Most Reported Vehicles for U0104

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	HONDA ODYSSEY
2	HONDA PILOT

Frequently Asked Questions

What causes communication codes?

Usually a wiring issue, corroded connector, failed module, or dead battery. The CAN bus network connects all your car's computers.

Can a bad battery cause network codes?

Yes. Low voltage can cause communication failures between modules. Always check battery health first — it's the cheapest potential fix.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Test the relevant sensor(s) with a multimeter before replacing
🔧 Check battery voltage and ground connections; inspect CAN bus wiring
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

U0104: Lost Communication With Cruise Control Module