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P0174 Diagnostic Trouble Code Discussion for April 2022

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
2003 Land Rover Discovery SE 4.6L Excessive Emissions, Poor Idle Quality VIN: SALTW16413
P0174: Bank b lean. smoke tested intake,small leak at #4 injector.Short term fuel trims are buried lean on both banks.Substituted MAF.Front o2 sensors reading.02 @ idle with no fluctuation.If you reset adaptions,stft drops to .99 but in 10 seconds back up to 1.24 @ idle on bo...
April 25, 2022