Code result
U3017
Control Module Timer/Clock Performance
Moderate severity
What it means
The control module's internal timer or clock has drifted or stopped — affects time-stamped diagnostic events, scheduled tasks and security challenges.
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
Internal oscillator drifted
highOne of the most commonly reported causes for this code — check this first.
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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