COO sends essential signals with poor status.
â–¶ How to fix
* Check the COO unit for DTCs * Check other units for DTCs (such as the EBS) * Spare part program the COO if needed
What you'll see
No driver-visible symptom recorded.
System reaction
Functions dependent on information from the COO may be degraded.
Diagnostic depth
Detection
Any essential signal sent by the COO is received with poor status.
Possible cause
* The COO might have an internal fault. * The COO might not be configured correctly. * Signals sent to the COO from other ECU’s might have poor status.