• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Another Day, Another Engine Code P1406

S

SlyBlackDragon

New member
"P1406 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description
EGR Valve Pintle Position Circuit Conditions
Cause
Engine at idle, then PCM detected these conditions in these tests • Test 1 The EGR sensor input was 0.18v or less • Test 2: The EGR sensor input was 2.06v or higher • Test 3 The maximum change in Desired EGR was less than 0.10v with a signal error over 0.20v for 1 second, or the Desired EGR was 0v with an EGR signal of 0.40v or more, conditions met twice in 10 seconds"

So...now what?
 


new egr valve time, or bad wires to its plug. sometimes you can clean em out with brake cleaner and free up the valve inside.
 
You must log in or register to reply here.
Back
Top