Code result
U0306
Software Incompatibility with Fuel Injector Control Module
Moderate severity
What it means
The injector driver module identifies itself with a software version that does not match what the engine ECU expects. Engine may not start or runs roughly until both modules are reflashed to compatible versions.
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
Software flash incomplete or wrong file
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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