1999 Forester 2.5 L - DTC P0136

[AJay]

I just received a DTC P0136 - (Rear oxygen sensor malfunction). Has
anyone had this problem and is it very difficult to replace this O2
sensor?

Thanks for any assistance.

A.J.

 

[Tony Hwang]

I just received a DTC P0136 - (Rear oxygen sensor malfunction). Has
anyone had this problem and is it very difficult to replace this O2
sensor?

Thanks for any assistance.

A.J.

Hi,
Once around that year, Subaru had bad batch of sensors. It was cover by
warranty for free replacement. My son's 2000 Impreza had bad one which
dealer replaced free. Think there was a TSB about that. To replace the
sensor you need a special wrench socket with a cut out to accomodate the
lead wires unless you cut the wires and splice them.