What should you look for when you get error code P0171 and P0174 in your 2002 ford explorer?

Error codes P0171 and P0174 indicate that the engine is running too lean on both bank 1 and bank 2, suggesting an imbalance in the air-fuel mixture. Common causes include vacuum leaks, faulty mass air flow (MAF) sensors, or issues with fuel delivery such as clogged fuel injectors or a weak fuel pump. Inspect vacuum hoses for leaks, check the MAF sensor for proper operation, and ensure fuel pressure is within specifications. Addressing these areas can help resolve the lean condition and clear the error codes.