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Oct 3, 2008 | 09:36 PM

akghound

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Junior User

Joined: Mar 2008

Posts: 64

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From: Montana City, Montana

Another problem

This code just showed up -- P1272 High to Low Side Open - Cylinder 2.
I'm not sure exactly what this means or how to troubleshoot it without the special tools. All I have to work with is a volt/ohm meter. I did ring out the wires from the injector through the valve cover. They are good, how do I find which wires go from the 40 pin connector. The siloniod buzzes when the injector test is preformed. Could it be a mechnical problem rather then an electrical problem? Any tips will be appreciated.
Ken Gardner

Oct 3, 2008 | 10:23 PM

jhand124

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Joined: Oct 2007

Posts: 2,225

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From: Farmington, Minnesota

Akghound:

I know nothing about the codes but here is what I found in a search....If you haven't tried that yet.
https://www.ford-trucks.com/article/...sel_Codes.html

Oct 3, 2008 | 10:34 PM

jhand124

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Joined: Oct 2007

Posts: 2,225

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From: Farmington, Minnesota

Sorry, that doesn't really help. One of the enlightened ones will chime in soon.

Oct 6, 2008 | 08:41 AM

Action4478

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Joined: Aug 2006

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NA11 DIAGNOSTIC TROUBLE CODES (DTCs) P1271-P1278

DTCs P1271-P1278 indicate a low side-to-high side open in the circuit between the IDM and the injector. The following table lists the circuits to inspect while performing these pinpoint tests, based on the DTC retrieved during the KOEO On-Demand or Injector Electrical Self Tests. Note: If all of the DTCs associated with an entire bank are retrieved, the high side circuit is most likely open.

<TABLE cellSpacing=0 cellPadding=3 border=1><TBODY><TR><TH vAlign=bottom align=middle>Cyl. </TH><TH vAlign=bottom align=middle>DTC </TH><TH vAlign=bottom align=middle>Low Side </TH><TH vAlign=bottom align=middle>High Side </TH><TH vAlign=bottom align=middle>Bank </TH></TR><TR><TD vAlign=top align=middle>1 </TD><TD vAlign=top align=middle>P1271 </TD><TD vAlign=top align=middle>555 (T) </TD><TD vAlign=top align=middle>1087 (O) </TD><TD vAlign=top align=middle>Right </TD></TR><TR><TD vAlign=top align=middle>2 </TD><TD vAlign=top align=middle>P1272 </TD><TD vAlign=top align=middle>556 (W) </TD><TD vAlign=top align=middle>878 (PK/Y) </TD><TD vAlign=top align=middle>Left </TD></TR><TR><TD vAlign=top align=middle>3 </TD><TD vAlign=top align=middle>P1273 </TD><TD vAlign=top align=middle>557 (BR/Y) </TD><TD vAlign=top align=middle>1087 (O) </TD><TD vAlign=top align=middle>Right </TD></TR><TR><TD vAlign=top align=middle>4 </TD><TD vAlign=top align=middle>P1274 </TD><TD vAlign=top align=middle>558 (BR/LB) </TD><TD vAlign=top align=middle>878 (PK/Y) </TD><TD vAlign=top align=middle>Left </TD></TR><TR><TD vAlign=top align=middle>5 </TD><TD vAlign=top align=middle>P1275 </TD><TD vAlign=top align=middle>559 (T/BK) </TD><TD vAlign=top align=middle>1087 (O) </TD><TD vAlign=top align=middle>Right </TD></TR><TR><TD vAlign=top align=middle>6 </TD><TD vAlign=top align=middle>P1276 </TD><TD vAlign=top align=middle>560 (LG/O) </TD><TD vAlign=top align=middle>878 (PK/Y) </TD><TD vAlign=top align=middle>Left </TD></TR><TR><TD vAlign=top align=middle>7 </TD><TD vAlign=top align=middle>P1277 </TD><TD vAlign=top align=middle>561 (T/R) </TD><TD vAlign=top align=middle>1087 (O) </TD><TD vAlign=top align=middle>Right </TD></TR><TR><TD vAlign=top align=middle>8 </TD><TD vAlign=top align=middle>P1278 </TD><TD vAlign=top align=middle>562 (LB) </TD><TD vAlign=top align=middle>878 (PK/Y) </TD><TD vAlign=top align=middle>Left </TD></TR></TBODY></TABLE>

Sounds like a loose OR burned wire