help with p0141 and p0161

[Lt.Leggs]

the two codes are for a heatercore malfunction which is the o2 sensor the two sensors after the catlyst. I changed both o2 sensors and still the code comes up after the two cycles to set the code off. Fuse is not blown to sensors either so i dont know what to do.

 

[Turdle]

Look for a bad connection in the wiring to the sensors-
First thing I would try is to "re seat" the PCM connector, and trans harness connector at the center of the firewall.

 

[Lt.Leggs]

where on the firwewall is it located?

 

[Turdle]

There is one right above the HVAC blower housing. This is the PCM main harness connector. You will see a huge wire harness going into the firewall.

The transmission and 02 sensor harness is right above the intake manifold. About 2"square and 4" long

You loosen the bolt to disconnect them. Look for bent or pushed back pins. Be careful not to touch them too much as they are easily bent out of shape.

 

[Lt.Leggs]

ok ill check that out thanks