formatzero Posted December 11, 2019 Share Posted December 11, 2019 Fault code PO174 came up on the car,had a mechanic friend plug a reader in and it came up with that code Lean bank 2.This came up as a stored code rather than a current fault and it reset ok.Had a look online to see cause and there was quite a list of possibilities .Whats the best way to narrow down these possibilities should it happen again ,cheers Quote Link to comment Share on other sites More sharing options...
fijifixit Posted December 11, 2019 Share Posted December 11, 2019 4 hours ago, formatzero said: Fault code PO174 came up on the car,had a mechanic friend plug a reader in and it came up with that code Lean bank 2.This came up as a stored code rather than a current fault and it reset ok.Had a look online to see cause and there was quite a list of possibilities .Whats the best way to narrow down these possibilities should it happen again ,cheers Was it Bank 2 Sensor 1 or Sensor 2? Quote Link to comment Share on other sites More sharing options...
formatzero Posted December 11, 2019 Author Share Posted December 11, 2019 4 hours ago, fijifixit said: Was it Bank 2 Sensor 1 or Sensor 2? Just said lean bank 2 ! No other codes were present. Quote Link to comment Share on other sites More sharing options...
fijifixit Posted December 11, 2019 Share Posted December 11, 2019 2 hours ago, formatzero said: Just said lean bank 2 ! No other codes were present. Check for any vacuum leaks. Also check the exhaust gasket between the manifold and Catalyctic converter. if it’s leaking it could be the cause of the issue. Have a read here Quote Link to comment Share on other sites More sharing options...
formatzero Posted December 12, 2019 Author Share Posted December 12, 2019 Great info mate,will get checks done ,thanks a lot Quote Link to comment Share on other sites More sharing options...
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