[Shotimes] 327 trouble code

[Steve Weinrich]

Most likely, it is due to a faulty DPFE sensor.

However, an open supply circuit to the DPFE or the output shorted to ground
or open to the PCM would also cause the same error code.

Simplest way to isolate if it the DPFE or not is to unplug the sensor,
jumper the DPFE output signal to the supply voltage and rerun the test.  If
the KOEO tes tnow throws a 337 (output too high), then the external
circuitry is okay and the DPFE is the fault.  About $50-60 bucks.

Steve


----- Original Message -----
From: "ROBERT SCHIRMER" <1surferbum@msn.com>
To: <shotimes@autox.team.net>
Sent: Wednesday, January 14, 2004 8:24 PM
Subject: [Shotimes] 327 trouble code


> gentlemen
>
> 93 ATX, just started to throw out a check engine lite , when engine warms
up.
> It is throwing out a KOEO trouble code of 327, which according to the
shotimes
> trouble code list means DPFE output circuit below minimum test. My code
> scanner book says EGR valve position sensor, Pressure feedback EGR (PFE)
> sensor, or EGR Pressure transducer-signal voltage too low. This does NOT
> appear to be the almighty EGR trouble code that all SHO members have at
some
> time in the past.
>
> Based on past experience, any thoughts on this??
>
> Thanks
> Bob
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