Readiness code, generating: Requirements

• The respective fuses of the Motronic fuel injection and ignition system must be OK: Electrical Wiring Diagrams, Troubleshooting Component Locations
• Battery voltage must be at least 11.5 V.
• All electrical consumers such as, for example, lights and rear window defroster must be switched off.
• For vehicles with automatic transmission, selector lever must be in "P".

• If the vehicle is equipped with an air conditioning system, this must be switched off.
• The Ground (GND) connections between engine and body must be OK.
• There must not be any DTCs stored in DTC memory → Diagnostic mode 3: Check DTC memory .

Let vehicle cool off with the ignition switched off until the following conditions are met:

• Intake air temperature 10 to 50°C → Diagnostic mode 1: Check measuring values ; PID 15: Intake air temperature
• Coolant temperature approx. intake air temperature (10 to 50°C) → Diagnostic mode 1: Check measuring values ; PID 5, Coolant temperature.