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P2188 and P2190

antonio_spain

By antonio_spain
in 997 TT, 997 GT2

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antonio_spain Member

antonio_spain

Posted
Posted

Last week right after refueling I had a CEL. It was code P2190. It was removed by Porsche and yesterday again, ten minutes after refueling I had code P2188. Can someone help me on the possible causes of this CEL codes?

Thanks,

  • Admin
Loren Member

Loren

Posted
  • Admin
Posted

P2190 Lambda control adaptation FRAU (lower load range) - below limit value

Possible causes:

- Incorrect main filling signal from hot-film mass air flow meter

- Fuel pressure too high

- Injection valve faulty (dripping)

- Tank vent faulty (does not close completely)

P2188 Lambda control adaptation FRAU (lower load range) - below limit value

Possible fault causes:

- Incorrect main filling signal from hot-film mass air flow meter

- Fuel pressure too high

- Injection valve faulty (dripping)

- Tank vent faulty (does not close completely)

Since it was after refueling I would suspect "Tank vent faulty (does not close completely)"

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