P1157 Windstar - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Vans and Mini Vans | Ford Aerostar | Ford Freestar | Ford Galaxy | Ford Windstar Forum for discussion of all Ford Vans and Ford Mini Vans such as the Ford Aerostar and Ford Freestar.

 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 01-10-12, 08:19 PM Thread Starter
Registered User
 
Join Date: Oct 2011
Posts: 249
P1157 Windstar

OK, new code on one of our vans turned up. The code that I just fixed (hopefully) was an EGR flow code. Replaced the DPFE and it hasn't been back yet, but today it showed a p1157. This is "Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2".

Is this a common failure? I didn't find much here, but one thing that I found is an exhaust leak can cause this code. What is most likely? An exhaust leak, the sensor or wiring?

I looked at Freeze Frame and found STFT for bank #2 was at 12.X. What does this suggest?

TDIDog is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 01-11-12, 07:44 AM
2002 F150 XLT
 
Bert's Avatar
 
Join Date: Nov 2008
Location: Oregon
Posts: 10,298
Re: P1157 Windstar

Check the O2 signal with the engine idling, the signal should be between
0.4 to 0.8 volts. I can be an exhaust lea too.

Read this for your STFT reading. http://www.c5forum.com/diy/ltft.php

Bert
Bert is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Vans and Mini Vans | Ford Aerostar | Ford Freestar | Ford Galaxy | Ford Windstar
Gear in this thread - Powered by O'Reilly Auto Parts


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome