Code Help Please: P0156 & P1131

[GoodSon]

I am trying to freshen up my moms car which is a 96 Contour V6 Duratec auto with 68K original miles completely stock. Her CEL comes on with two codes. P1056-Sensor circuit malfunction, bank 2 sensor 2, and P1131-Manufacturer Controlled Fuel and Air metering. I picked up a Bosch O2 sensor #13133 for the first code. It was dangling a few inches off the ground and looked beat up. The 2nd code (P1131) has me confused. Does anybody know what the problem might be.TIA.

[projectSHO89]

2nd code (P1131) has me confused. Does anybody know what the problem might be.TIA.


That would be the upstream sensor at the firewall. Under the coilpack. Have fun.

Steve

[Tony2005]

... The 2nd code (P1131) has me confused. Does anybody know what the problem might be.TIA.

Read this thread from Old Site.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=1305493&Forum=trouble&Words=1131&Match=Entire%20Phrase&Searchpage=0&Limit=25&Old=6months&Main=1303310&Search=true#Post1305493

Bank 1 Upper sensor removal and reinstallation from Old Site Duratec Maintenance FAQ
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=958650&page=0&view=collapsed&sb=5&o=7&fpart=1

[FavoriteMystaque]

I just got P1131 last night, I cleared the code, drove to work today, no CEL yet. Good information there, I hope I do not need. It was very damp (heavy dew) maybe that messed it up..

[Tony2005]

... It was very damp (heavy dew) maybe that messed it up..


Maybe it was but what I "usually" get is P0136. Got it Tuesday, cleared it and it has not come back. I was driving for 10 hours in the rain last Friday (Ernesto).

The previous time I got the same code was about a year ago; which was the next time after I drove 4 hours in the pouring rain.

I suspect it was the O2 connectors or the mileliminator connectors.

[GoodSon]

That would be the upstream sensor at the firewall. Under the coilpack. Have fun.

Steve

Dang, what a royal PITA for just a sensor. I will say Ford definetly utilized every bit of space in the engine bay. Getting to the senor will still be a pain with the coilpack removed.

[projectSHO89]

I just got P1131 last night, I cleared the code, drove to work today, no CEL yet. Good information there, I hope I do not need. It was very damp (heavy dew) maybe that messed it up..

Nah, it wasn't the dew that caused it..

A fault such as this requires that the OBD-II test fail on at least two consecutive drive cycles in which the test was performed and failed. Your optimism is premature.

Dang, what a royal PITA for just a sensor. I will say Ford definetly utilized every bit of space in the engine bay. Getting to the senor will still be a pain with the coilpack removed.

Yep. Done that one twice already in about 140K miles.

Steve

[FavoriteMystaque]

"Your optimism is premature." Yes.

In 2 drive cycles the light comes back, my wallet is going to be lightened down at the dealer parts counter in 30 Minutes. :blackeye: Of course it's the Rear sensor!