96 Mustang GT: P0136 and P0156

RacinJason924 · **Joined:** Tue May 02, 2006 3:19 pm **Posts:** 3

Whats going on guys, Check Engine light came on a while back and the codes that came up were P0136/O2 sens cir. B1 S2 and P0156/O2 sens cir. B2 S2 So my question is which Sensors are they, The ones towards the rear of the car or the ones closer to headers? Thanks A Lot!

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

jeff compton · **Posted:** Tue May 02, 2006 4:34 pm

I don't think it's both sensors, why would they both crash at the same time, what about a wiring issue, I think your codes are for downstream or after cat but I'm not sure.

check your wiring, fuses etc

good luck and keep us postted

What's the mileage?

jeff

RacinJason924 · **Joined:** Tue May 02, 2006 3:19 pm **Posts:** 3

I dont think its a wiring issue, because i checked all the wires and they seem fine. It have close to 95,000 miles on it. I had to replace the two in the front closest to the headers last year and i dont know if it those ones that went bad or if its time to change the two in the back. i just Dont know what the B1 S2 and the B2 S2 mean? Thanks jeff

jeff compton · **Posted:** Wed May 03, 2006 11:50 am

bank #1 and bank #2 downstream, might be time for sensors if you've already replaced the upstream

RacinJason924 · **Joined:** Tue May 02, 2006 3:19 pm **Posts:** 3

Thanks A lot, Youve been a real big help. I'll keep you posted

kehenderson85 · **Joined:** Fri Mar 13, 2009 8:15 pm **Posts:** 1

i had the same prob with my 96 mustang the p0156 code was the o2 sensors after the cat converter it only read like one sensor but i had to change both.

96 Mustang GT: P0136 and P0156

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