P0470 code, Exhaust Pressure Sensor - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 01-12-2012, 12:34 PM Thread Starter
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P0470 code, Exhaust Pressure Sensor

just installed the scangaugeII and checked my codes and P0470 showed up, pointing at the exhaust pressure sensor. i was sucessful in clearing the code, after a bit of doing, and got the check engine light to go out. So any advice on what i might do to check it out, or just consider it a fluk, as this happened on the coldest day so far this year, during the starting process. I guess until i start it up cold, i might not know if it will kick the code again,
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post #2 of 5 Old 01-12-2012, 01:03 PM
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After reading the pinpoint tests, if the code returns, it is probably the sensor itself.


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post #3 of 5 Old 01-17-2012, 01:01 PM
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Mine just did the same thing,and yes it was the coldest day of the year as well. Where is the sensor located? Any advice is greatly appreciated.
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post #4 of 5 Old 01-17-2012, 03:41 PM
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There was a TSB released back in September of 2007 pertaining specifically to 2006 and 2007 model year F-Series applications. The article number is 07-18-04 intended specifically to address P0470 set during ambient temperatures in the minus digits. The updated calibration strategy at the time would ignore EBP input for a few seconds upon cold startup to melt any ice buildup on the sensor. Now, this is an old update obviously. Since then there have been further updated calibrations released, so if yours is at the latest level and/or yours is not an '06/'07 model year, this obviously wouldn't apply.

In answer to the poster inquiring about its location, on '03 to early '05 model years, the sensor is threaded into a bracket atop the thermostat, directly beside the upper rad hose. On late '05 to '07 model years, the sensor is threaded directly to the EBP tube that is secured to the front FICM mounting bracket, under the coolant degas bottle.


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post #5 of 5 Old 01-18-2012, 06:00 AM Thread Starter
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thanks for the info

thanks for that info, certianly helps put my mind at ease, as this has not throw that code again, since resetting it last week, and we have had some cold morning starts. and i see where a icing of condensation on the sensor could foul the output. still learning but so thankful for this site
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