U0184 Code: Lost Communication With Radio
A published detailed article is not available for this reference yet.
What the code tells you
A diagnostic trouble code identifies a condition detected by a controller. It does not identify a failed part by itself; confirm the definition for the vehicle and controller involved.
Before diagnosis
Record the VIN, engine, symptoms, all stored codes and freeze-frame data before clearing faults. Follow the manufacturer’s test procedure. If there is overheating, loss of oil pressure, severe misfire or unsafe drivability, stop safely and arrange professional assistance.
Commercial-vehicle applicability
An OBD-II code is not a substitute for a heavy-duty SPN/FMI fault definition. Identify the engine and reporting controller; use the correct service information for that configuration.
Related U-series codes
U0100
Lost Communication With ECM/PCM 'A'
U0101
Lost Communication With TCM
U0121
Lost Communication With ABS Control Module
U0140
Lost Communication With Body Control Module
U0155
Lost Communication With Instrument Panel Cluster
U0401
Invalid Data Received From ECM/PCM
U0073
Control Module Communication Bus 'A' Off
U0109
Lost Communication With Fuel Pump Control Module
Parts, tools, and pros for this code
Parts pros use for this job
- •Oxygen sensor
- •Spark plugs
- •MAF sensor
Tools pros use
- •OBD-II scanner
- •Code reader
- •Smoke leak tester
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