Thanks all for the good advice. The converter is a good bit closer to
the engine than I thought it would be. I'll get an updated code and
figure out which sensor is the problem.

2nd problem. The hood latch handle broke off in my hand. Did they get
this part from GM?

Tom



SoCalMike wrote:
> courir26@yahoo.com wrote:
> > My daughter has a 99 Civic LX, California Model (LEV I think)?
> >
> > Does this car have one or two O2 sensors?
> >
>
> 2. one staring you right in the face on the exhaust manifold, and one
> after the cat, which is bolted to the exhaust manifold.
>
> > She got a CEL, Autozone says their scanner cannot differentiate between
> > a front or a rear O2 sensor failure.
>
> they need a new scanner then. IIRC, my code was PO135 primary oxygen
> sensor heater circuit malfunction.
>
> primary means top, the sensor in the manifold.
> >
> > The front sesnor is about a year old.
>
> OEM honda, or aftermarket? either way its worth testing the sensor for
> continuity. for me, the 2 bottom black wires read 0 ohms, which meant
> the heater circuit was dead. or something like that. id bust out the
> ohmmeter and helm manual and test em both.
> >
> > Are there front and rear sensors, or is the Auto Zone dude all wet?
>
> yep, there are. but front=top and rear=bottom
> >
> > The rear sensor price is about $250 (if there is such a thing).
> >
> > Tom
> >