Ran codes...now what?

[Blast7]

I ran the codes that my SHO has been showing and hear are the results...

41--HEGO sensor circuit indicates system lean (rear)

83--'90-91: Low speed primary fuel pump circuit failure

91--'90-91: No HEGO switching detected (front)

I have two new O2 sensors that I can put it but what is the plan of action for code 83? Is my fuel pump bad?

 

[projectSHO89]

Fix the O2 sensor codes, reset the codes, then drive it again. Very possibly a transient code, otherwise, under the alternate codes in the Probst manual, it lists a failure in the high Speed Cooling fan circuit as a cause.

It is necessary to determine if this is a KOEO code or a Stored (Continuous) code.

Steve W

 

[Blast7]

I will replace the O2 sensors and get back to the forum probably later in the week. The code is a KOEO code.