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2002 Ford Mustang EGR pressure sensor

Tiny
SCHWARBERG
  • MEMBER
  • 2002 FORD MUSTANG
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
I have a 2002 ford mustang that I need to get smogged, however the check engine light is on. The smog tech. Informed that it will not pass smog due to code P1401 which he said was a problem with the egr pressure sensor. Any info on this will be of great help, like where to locate the sensor to replace it, how to replace it, any special tools needed to do the job, and if I need to replace it at all. Also what else I need to look for that could be causing the problem as well. Your help is greatly appreciated
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Wednesday, June 18th, 2008 AT 8:19 PM

1 Reply

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
You probably have a lean condition, a Lean condition may sometimes appear because of a bad Differential Pressure Sensor (DPFE). This sensor monitors EGR flow, and is located on the engine near the EGR valve. There are two hoses that connect the sensor to the tube that runs from the exhaust manifold to the EGR valve. The sensor misreads EGR flow and the computer increases EGR which has a leaning effect on the fuel mixture. The fix is to replace the DPFE sensor.
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Wednesday, June 18th, 2008 AT 8:32 PM

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