Said lean bank 1 lean bank 2

Question

Did not get a number code just says:
lean bank 1 lean bank 2

Answer 1

Hi there

Most often when you have lean codes that affect both sides of the engine it's the mass air flow sensor or low fuel pressure. If the truck is running poorly, you might be able to unplug the maf sensor and see if there is any improvement. Otherwise you will need a scan tool that can see the live data and a fuel pressure gauge so you can check the fuel pressure.