P2431 GMC - have replaced the air pump & air check valve but still have P2431 code

Question

Replaced air pump & air check valve but P2431 code was thrown, what next ?

Answer 1

Hi there,

If replacing the air pump hasn't solved the issue, it's most likely a wiring problem. Here is some info for you.

P2431 GMC - Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance Bank 1

Read more: https://www.autocodes.com/p2431_gmc.html