2011 GMC 3500 6.6L Duramax dually Denali just replaced the EGR valve and keep getting P140A code

Question

Ive cleared the code several times only to have it come back. The engine light keeps coming on can you explain a fix for this code?

Answer 1

Hi there,

This code indicates an issue with the exhaust gas recirculation cooler bypass valve. Here is a list of possible causes.

P140A GMC - Exhaust Gas Recirculation Cooling Bypass Rationality

Read more: https://www.autocodes.com/p140a_gmc.html