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Dct P1131 Lack Of Upstream Headed Oxygen Sensor Switch


TXR05

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  • Member For: 13y 6m 14d
  • Gender: Male
  • Location: Brisbane QLD

So my car threw a code being p1131 lack of upstream heated oxygen sensor switch-sensor indicates lean.

Any ideas on what that means? I've found quite a number of meanings about it but none for the falcon in particular.

Fuel consumption has seem of gone up about 2l per 100km.

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  • Member For: 13y 8m 7d
  • Gender: Male
  • Location: Sydney

my brother was having both 1131 and 1132 probably fixed it out of dumb luck but he contact cleaned all the connections for the sensor on the intake and zorst. Tightened all intake and zorst bolts and gapped some new plugs. I dont know which one did it, how, why or maybe it was unrelated all together but the codes are gone.

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