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U0239: Lost Communication With Entrapment Control Module A

What Does U0239 Mean?

U0239 is a diagnostic trouble code indicating: Lost Communication With Entrapment Control Module A. This code relates to the manufacturer-specific network system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

U0234 Lost Communication With Convenience Recall Module U0235 Lost Communication With Front Distance Range Sensor - Single Sensor or Center U0236 Lost Communication With Column Lock Module U0237 Lost Communication With Digital Audio Control Module C U0238 Lost Communication With Digital Audio Control Module D U0240 Lost Communication With Entrapment Control Module B U0241 Lost Communication With Headlamp Control Module A U0242 Lost Communication With Headlamp Control Module B