What are the codes for lean in bank?
What are the codes for lean in bank? The codes are P0171 and P0174 (running lean in bank 1 and 2). I've done the intake gasket, new pcv pipe behind the intake, new injector assembly kit, new MAF sensor, spark plaugs o2 sensors, fuel pump and a fuel filter. And the shop says there... What does it mean when engine Bank 2 is too lean? A lean condition is brought about by an imbalance in the air to fuel ratio due to either insufficient fuel (from, say, a weak fuel system) or excessive air entering the engine. The bank 2...