2 codes after changing Imap sensor

[Rawze]

(09-17-2022 )Hennessy Wrote:  After changing the IMAP sensor, and cleaning the egr differential pressure sensor, I had 2 codes come up code 124 pid 102 Intake manifold pressure high but above normal range

and code 687 pid 103 low turbocharger n1 speed

Cleared the codes but after researching the first one, it said it could derate the engine. anyone know what I missed? got 2 other codes but they are for the aftertreatment noX sensor outlet.

for those looking into these 2 sensors, the IMAP sensor is now 80, and the EGR differential is 242 from kenworth.

Simply replacing those sensors (IMAP and Delta-P sensors) with good, new OEM sensors does not make the engine suddenly have more faults...

If you replaced the IMAP and then got a fault for it not being plugged in then either it is not plugged in properly, or you likely got a bad sensor.

===
if you are getting a turbo speed sensor alarm then it is most likely a bad speed sensor?, or it got unplugged?.

Also, some history, what model engine/truck, etc. adding in some more details might be more helpful in getting more responses.