EHS Internal Error
â–¶ How to fix
1. Check that there is oil in the hydraulic hosings on both sides of the pump. 2. Check that there is no stoppages in the hydraulic hosings, or any other external reason the pump cant pump. 3. Replace unit.
What you'll see
Stroke sound from EHS
System reaction
Red
Diagnostic depth
Detection
If the motor is not rotating (measured motor speed is below 15 rpm) while still being in state "Controlled On", "Error On", or "Reduced" for a duration of 500 ms. DTC will not be set if Enable Speed Command (from CMS) is set to 0 (disable) or if voltage is below 16V. This DTC will unset if the measured speed increases to over 100 rpm again.
Possible cause
External (Related to hydraulics)