ADDITIONAL ECU - Missing message
â–¶ How to fix
Check short-circuits and open circuit on CAN lines to the signal transmitting ECU. Check the sender ECU (Additional ECU) for primary DTC(s).
What you'll see
No driver-visible symptom recorded.
System reaction
Signals from Additional ECU are not available or erroneous, therefore not used. This can cause various effects. Yellow warning lamp.
Diagnostic depth
Detection
One or more messages missing from sender ECU.
Possible cause
Electromagnetic disturbance, sender ECU is disconnected from the CAN, sender ECU does not send all messages because of an internal reason or error. Error value is sent by sender ECU.