Code result
U0427
Invalid Data Received from Vehicle Security Control Module
Moderate severity
What it means
The vehicle security controller delivers data that does not pass plausibility checks. Alarm system or remote unlocking can behave erratically.
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
Security module failed
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.
CAN terminating resistor (120 Ω) drifted out of spec
lowLess common, but worth ruling out after the more likely causes.
Related help
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