Air Processing System ECU - Missing message
â–¶ How to fix
Check short-circuits and open circuit on lines CAN to the signal transmitting ECU. Check the sender ECU (Air Processing ECU) for primary DTC(s).
What you'll see
No driver-visible symptom recorded.
System reaction
Supply pressure information is missing. If system pressure is low "Release not possible" failure can occur. 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.