Fault code p0172
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Hi I have a cel with the code P0172 I took to Subaru and they done a diagnostics saying it was the front lambda sensor. So replaced this reset ecu and 20miles later ping cel and same code. Anyone had a similar code? My dv sounds different not as loud but boost holds fine. Could the map sensor cause this as when I had car mapped the guy said it was playing up but again I told Subaru this and there diagnostics said it was fine? Just trying to get to the bottom of this without spending money I don't need to " Subaru and the lambda sensor"
Cheers
Lee
Cheers
Lee
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Yes, Rich is too much fuel and Lean is not enough
Probablly due to the DV at a guess if it`s a VTA DV, The Maf is reading a certain amount of airflow so sends through the appropriate amount of fuel, But seeing as the DV is releasing the air there will be more fuel than required for the amount of air and the Ecu can not adjust within the parameters it is given so flags up a CEL, Only a guess though
Probablly due to the DV at a guess if it`s a VTA DV, The Maf is reading a certain amount of airflow so sends through the appropriate amount of fuel, But seeing as the DV is releasing the air there will be more fuel than required for the amount of air and the Ecu can not adjust within the parameters it is given so flags up a CEL, Only a guess though
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