EEC, Control unit for exhaust gas aftertreatment
â–¶ How to fix
Proceed as follows: Check the connectors and electrical cables between the EEC control unit and EMS engine management system.If the connectors and electrical cables seem to be intact, check the control unit versions and if they match one another.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The EEC control unit has lost contact with the EMS engine management system.
Possible cause
Fault in the connectors or electrical cables between the EEC control unit and the EMS engine management system.In very rare cases, the fault may be due to the incorrect version of the EEC control unit or the EMS engine management system.