Fault criteria:
- Conditions for test 1, 2, 3 or 4 fulfilled.
- Test 1: Mass air flow sensor indicates more than 12% lower value than that calculated while the multiplicative adaptation is greater than 17%.
- Test 2: Mass air flow sensor indicates more than 12% higher value than that calculated while the multiplicative adaptation is lower than -17%.
- Test 3: Mass air flow sensor indicates more than 30% lower value than that calculated.
- Test 4: Mass air flow sensor indicates more than 30% higher value than that calculated.