I have a P0147 code on a 2000 Civic Lx.
Is it refering to the upper sensor above the cat or the one under it?

 

I'm not showing that as a valid DTC. Double check it and let me know.

 

I had it checked at Autozone. He pulled a P0147
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)

 

OK i had it checked again after clearing the code by unplugging the battery.
this time is a p0135.
soooo..bank one sensor one is first inline from manifold??

 

bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmsrally &raquo;</TD></TR><TR><TD CLASS="quote">
this time is a p0135.
soooo..bank one sensor one is first inline from manifold??</TD></TR></TABLE>
Yes

 

Thanx.
Is the replacement of that sensor the mosr common fix for that code?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmsrally &raquo;</TD></TR><TR><TD CLASS="quote">Thanx.
Is the replacement of that sensor the mosr common fix for that code?</TD></TR></TABLE>
Yes, but there's an easy test to verify it's the problem. Measure the resistance between the two black wires, should be 10-40 ohms.

 

ok ive never tested a circuit before. How do i do it?
i have a meter, never used it.
also, 10-40 ohms when is broke or working correctly?

 

bump

 

bumpity

 

bump for meter instructions plz

 

bump