ECU identification data has been lost. Examples of lost data are ECU complete number and vehicle identification number.
â–¶ How to fix
Replace the EST unit (since ECU complete number can not be recovered/rewritten by SDP3).
What you'll see
No driver-visible symptom recorded.
System reaction
• COO red warning shown in ICL (since EST is not sending the correct VIN) • Limited support in SDP3 (since the ECU complete number can not be identified)
Diagnostic depth
Detection
File containing KWP2000 ECU identification data is found to be inconsistent or missing at start of ECU. The ECU-ID data could not be read from the persistent memory.
Possible cause
System supply voltage (U30) was cut off while the ECU was writing to the file containing the ECU identification data.