Question

I got the codes P0171, P0174, P0187, and P0188 on my 2008 Kia Sedona LX 3.8L V6. I already replaced MAF, plus the TPMS light is ON (no tire indicator on).

Answer 1

P0171 Fuel trim lean Bank 1

P0172 Fuel trim lean Bank 2

P0187 Fuel temperature sensor "B" circuit low

P0188 Fuel temperature sensor open or shorted

For P0188 and P0187 the solution is to replace the fuel temperature sensor which is located in the fuel tank. Which is part of the fuel pump.