On-Board Diagnostics

Type of diagnosis: 

• Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria 

• General condition for this diagnostic trouble code: Atmospheric pressure must exceed 72 kPa as well as coolant and intake air temperature must exceed -7°C.
• Engine running. Main relay voltage exceeding 10V. Output not active.

Fault criteria 

• Voltage below 2V for 1 s.

Dependents 

• None

System reaction to a fault 

• Fuel adaptation and purging are blocked.

OK report 

• Enable criteria fulfilled. Fault criteria not fulfilled within 60 s.

Fault handling:  (For more information, see  FAULT HANDLING III, OTHER EMISSION-RELATED COMPONENTS AND FUNCTION   )