Both codes P0404 and P1404 are the same code.
There’s a problem with the EGR Circuit Performance.
Electrical.
The difference is, the P1404 code is a GM specific code. Where the P0404 code is a generic code. Applies to all vehicles.
Tester
Both codes P0404 and P1404 are the same code.
There’s a problem with the EGR Circuit Performance.
Electrical.
The difference is, the P1404 code is a GM specific code. Where the P0404 code is a generic code. Applies to all vehicles.
Tester