1. DTC U1840[86] description
The EHCU and BCM communicate the control information and diagnosis information via the CAN communication circuit. If the EHCU detects a malfunction in the CAN communication circuit, this DTC is set.
2. Condition for setting DTC U1840[86]
- The EHCU detects an abnormal CAN message received from the BCM.
3. Action taken when DTC U1840[86] sets
- Hill Descent Control inhibition (Models with ESC)