LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> BMW >> 1994 >> 850CSi >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self Diagnostics >> Component Tests >> Emission Control >> Check Function
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Check Function

  1. To carry out this check, oxygen sensor must be at operating temperature. Emission control system is dependent on engine temperature and can have a duration of up to 5 minutes at 86°F (30°C). At starting temperatures of greater than 68°F (20°C), the control can take up operation after approximately 30 seconds.
  2. The control system can effectively compensate wear-related deviations in air-fuel mixture and thus conceal other defects. If necessary, disconnect oxygen sensor when checking air-fuel mixture system.
scientia non olet · About LEMON Manuals