Question

2007 Chrysler Aspen Hemi with engine code P1404. IAT B Circuit Malfunction Exhaust Gas recirculation, closed position performance, what needs to be replaced?

Answer 1

P1404,whats wrong with it , it is 95% just the EGR itself,now there is a diagnostic tree you can follow and use it to trouble shoot,but you need a scan data, and you need to measeure reference voltage, but I always see this as EGR malfunction.and its never been anything else but the EGR

Answer 2

You may have to replaced the EGR valve.

P1404 CHRYSLER - EGR Position Sensor Rationality Closed
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