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P0401 Diagnostic Trouble Code Discussion for June 2015

Insufficient EGR Flow Detected


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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2005 Mitsubishi Outlander XLS 2.4L MIL Lamp on VIN: JA4LX41F65
P0401: Insufficient EGR Flow Detected. Trying to install new pcm. Apparently you can reprogram with J2534, but can only initialize a new pcm with the MUTIII tool. My info said that it simply needs a vin write. The dealer says that it needs a theft module(300 cocos) and a reprogram at 150 cocos. The...
June 04, 2015
1997 Toyota Camry CE 2.2L Excessive Emissions VIN: 4T1BG22K5V
P0401: EGR System Insufficient Flow Detected. ... can't figure out why code p0401 (insufficient egr flow). The egr valve working fine, the passages are open, the vaccum transducer is working fine. IF I connect the hose coming out of the transducer to the egr valve, I have 18 inches of vaccum, but if I con...
June 23, 2015