S80 T6 L6-2.9L Turbo VIN 91 B6294T (2002)
The fuel adaptations (lambda adaptations) should be checked first to analyze for an air leak. Thereafter check for smaller leaks than normal, for idling,
less than 5 kg/h and/or for part load less than 1 kg/h. If the leakage flow is smaller, the crankcase ventilation may be blocked.
If the leakage flow is greater than normal, for idling greater than 10 kg/h and/or for part load greater than 1 kg/h, there might be an air leak in the
connections to the engine after the throttle unit.