Loss of operation data
â–¶ How to fix
None (since lost data can not be re-created).
What you'll see
No driver-visible symptom recorded.
System reaction
• No vehicle reactions. • Operation data lost (detected when downloaded to SVAP?).
Diagnostic depth
Detection
Operation data stored in the persistent memory has been lost.
Possible cause
System supply voltage (U30, for truck) was cut off while the ECU was writing to the file containing operation data. System supply voltage (B+, for bus) was cut off while the ECU was writing to the file containing operation data.