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P0401 Diagnostic Trouble Code Discussion for July 2007

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1997 Mazda MPV ES 3.0L No Start VIN: JM3LV5233W
P0401: 02 Heater Circuit. This makes no sense to me. I hope someone has seen it before. Customer states that she was driving and got about a mile from home and the van lost power and then died. The fuel guage was on empty, (teenage son borrowed car last night) so she thought she had ru...
July 01, 2007
2002 Chrysler PT Cruiser 2.4L MIL Lamp on VIN: 3C38FY68B7
P0401: EGR System Malfunction. ... dont work on these that often. customer states mil on and low power. checked codes with snap-on scanner. P0401. Any known concerns, tsbs or other articles. thanks.
July 10, 2007
1998 Ford Taurus SHO 3.4L MIL Lamp on VIN: 1FAFP54N0W
P0401: low egr flow. Taurus came in w/code P0401. Great, we replaced the DPFE sensor and cleared the codes. Test drove with no probs or concerns. Cust came back with 1 hose off the DPFE, reattached and released. Came back 2 weeks later with P0401. Dpfe voltage sitting at 1.06 volt...
July 12, 2007
2000 Ford Ranger XL 3.0L MIL Lamp on VIN: 1FTYR14V3Y
P0401: insufficient egr flow detected. ... solinoid and dpfe sensor all vac lines good exhaust is clear throttle body port to egr is clean and correct egr was replaced so system is about all new does any one know of a tsb i cant find one or any one know of a flash needed for the p0401 code every th...
July 18, 2007
1997 Ford F-150 Lariat 4.6L MIL Lamp on VIN: 1FTDX17W8V
P0401: egr flow. Hello, I need some help with this ford truck. it has a egr flow code. when it first came in i hooked a vaccuum pump to the topp of the diaphram on the valve it self and started pumping, would not hold vacuum and no change in rpm at all. i removed it and determ...
July 23, 2007
1998 Ford F-150 4.2L MIL Lamp on VIN: KEIEIKSKS9
P0401: low egr flow. ... and egr code in it. i do not recall the code number but it was for the egr sensor out of range low. with scanner looked at data and the voltage was .03 volts. egr system seemed to be working ok so i put the sensor on and cleared codes and retested. voltage...
July 25, 2007