Differential lock, transfer box/front wheel drive sensor short circuit to battery.
â–¶ How to fix
Check the sensor, its connectors and wiring
What you'll see
No driver-visible symptom recorded.
System reaction
Wrong status of the differential lock may be indicated to the driver.
Diagnostic depth
Detection
Measured sensor voltage indicates short circuit to U30.
Possible cause
Fault on sensor, its connectors or wiring