Question

1996 Toyota Camry LE 2.2L with engine codes P0440 and P0401. Please help me troubleshooting the codes

Answer 1

P0401 TOYOTA - Exhaust Gas Recirculation Flow Insufficient Detected
Read more: https://www.autocodes.com/p0401_toyota.html

You should start by removing the EGR valve and cleaning the EGR ports and valve. If the problem, persist you may have to replace the EGR valve

P0440 TOYOTA - Evaporative Emission Control System Malfunction
Read more: https://www.autocodes.com/p0440_toyota.html

For this code start by checking the fuel tank cap if the cap is OK and tight, then you may have a leak in the EVAP system or a faulty EVAP canister.