P2188

P2188

Diagnosis information - DME V6 DFI

Lambda control adaptation RKAT, bank 1 - range near idle speed

NOTE:
If the fault >P0445 - below limit value< is entered, first rectify this fault in accordance with the instructions. An open tank vent can lead to the lean limit state.
Opposed adaptation values in connection with misfires indicate that the timing is out of adjustment.

Diagnostic conditions

- Battery positive voltage between 10 V and 16 V
- Lambda control active
- Engine temperature > 60 °C (140 °F)
- Mass air flow between 40 kg/h and 300 kg/h
- Engine load between 17 % and 73 %
- Engine speed between 1200 rpm and 3000 rpm

Possible fault causes
- Incorrect main filling signal from hot-film mass air flow sensor (setpoint voltage with stopped engine and ignition on = 0.9 ... 1.1 V)
- Fuel pressure too high
- Mechanical fault of fuel injector(s)
- Mechanical fault of tank vent (stuck open)
- Tank vent driver fault

Affected contacts on the D control unit connector
Connector [B]:
- Contact 85
- Contact 64

Affected contacts on the hot-film mass air flow sensor 1 connector
- Contact 5
- Contact 3