U0185
Lost Communication With Antenna Control Module
Communication network (infotainment)
Generic OBD-II
Low
What it means
U0185 means the vehicle has lost communication with the antenna control module — the unit that handles radio reception and, on some vehicles, satellite or keyless-antenna functions. The effect is limited to reception and related infotainment features; the engine and all safety systems keep working. It typically traces to a wiring or connector fault, a power/ground problem, water intrusion, or a failed antenna module.
Low
Can I keep driving? Fully drivable — this affects radio/antenna functions only; the engine and safety systems are unaffected.
Common symptoms
What you'll notice
- Poor or no radio reception
- Loss of satellite radio, or keyless/antenna-related features on some vehicles
- Infotainment/radio reports the antenna module missing
- Feature works intermittently
Common causes
Most likely first
- Damaged or corroded connector/wiring at the antenna control moduleLikely
- No power or ground to the module (blown fuse, bad ground)Common
- Water intrusion at the module (often near the antenna base)Common
- Internally failed antenna control moduleLess often
How to diagnose & fix
Work through it in order
- Scan all modules and confirm the antenna control module isn't communicating.
- Check the fuse, power, and ground feeding the module.
- Inspect the connector and wiring at the module for corrosion, moisture, and damage.
- Repair the wiring or connector as needed.
- If it still won't respond, replace the antenna control module, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0185?+
Yes — it only affects radio and antenna functions. There's no impact on the engine, brakes, or safety systems, so you can fix it at your convenience.
Can I just clear U0185?+
It returns if the module still isn't communicating. Repair the wiring or module for it to stay clear, but there's no urgency.
Related codes
Often seen with U0185
Read & clear U0185 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX