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U0231
System
Network (CAN Bus)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Rain Sensor Module

Understand U0231, common causes, and the right TOPDON scanner to diagnose it.

Rain sensor module offline — auto wipers and sometimes lighting affected.

Häufige Symptome

  • Auto wipers inop
  • Headlight auto mode affected

Typische Ursachen

  • Failed rain sensor on windshield
  • CAN wiring
  • Aftermarket windshield without sensor

Welchen Scanner brauchen Sie?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Nutzen Sie Live-Daten und Freeze Frame, bevor Sie Teile tauschen. ABS-, SRS- und U-Codes erfordern meist einen Vollsystem-Scanner.

Diagnose-Tipps

  • Freeze Frame erfassen, wenn der Code erstmals gesetzt wird
  • Code erst nach Behebung der Ursache löschen
  • Auf verwandte pending codes prüfen
  • Batteriespannung über 12,4 V prüfen, bevor Sie Sensoren verdächtigen

Empfohlene TOPDON Scanner

Häufig gestellte Fragen

What does U0231 mean?
U0231 indicates lost communication with rain sensor module. Rain sensor module offline — auto wipers and sometimes lighting affected.
Can I diagnose U0231 with a basic code reader?
U0231 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for U0231?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0231?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.