So I have a 2010 Chevy impala LT 3.5 the stupid p2444 code Kees coming back on cold starts I had the air pump replaced as well as the valve relaxed checked the relay I have steady ground babe no idea what to do next my mechanic doesn’t even know what else it could be car runs fine but once I had one of those items replaced and I left it over night then started the car engine light would come on any help please

 

I used to have to work on the original AIR system, so I'll be honest and tell you that I hate the AIR systems, but you have to meet smog standards, I understand:

Here is what I found:

What causes the P2444 code?

• Faulty air injection valve
• Faulty one-way check valve
• Faulty air injection pump
• Faulty pressure sensor
• Pressure sensor wiring that is frayed, broken, or shorted
• Pressure sensor connector that is damaged or corroded
• Pressure sensor connector that has bent pins
• Faulty vacuum switching valve
• Vacuum switching valve wiring that is frayed, broken, or shorted
• Vacuum switching connector that is broken, melted, corroded
• Vacuum switching connector that has bent pins