Code result
U0231
Lost Communication with Rain Sensor Module
Moderate severity
What it means
The wiper controller has lost the rain/light sensor module. Automatic wiping and automatic headlight switching stop working; the driver has to operate them manually.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Rain sensor failed
highOne of the most commonly reported causes for this code — check this first.
LIN wire to sensor open
mediumA plausible cause — test and verify before replacing parts.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
Related help
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