09 D13 620000 miles. I get an fmi 7 and 12 that come and go for the delta P sensor. Its not the sensor, I've swapped out for new 2 times to trouble shoot. Venturi is clean. This has been happening for 8 months. She only derates slightly when the light comes on but not every time. I have a scan gauge that shows my intake air temperature. The sensor is new and reading accurately. I notice that sometimes it jumps between its 100 and change temp to a few degrees above outside ambient quickly, is this indicative of the egr opening and closing quickly and/or sticking? As I understant, the egr is open when the engine is at operating temp and running down the highway.
deltaP coding strangely/air intake temp relation?
Discussion in 'Volvo Forum' started by neverhome79, Mar 20, 2014.
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