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P0401 Diagnostic Trouble Code Discussion for December 2010

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1996 Toyota Camry LE 2.2L MIL Lamp on VIN: 4T1BG12KXT
P0401: EGR System Insufficient Flow Detected. ... third party for used car purchase. I saw the egr vacuum regulator had beed "melted", and told the buyer it would be an easy fix (not anymore!) if he decided to buy the car. Check engine light was on with P0401 stored. The seller had told us the hea...
December 09, 2010
1999 Toyota Camry LE 2.2L Hesitation, Surge, Cuts out, Stall VIN: JT2BG22K6X
P0401: EGR System Insufficient Flow Detected. The codes stored have been in the pcm for a long time before this new problem developed. This car will sag heavily when accelerating from say 35mph. It will stall if you continue to press the pedal down. If you hold the pedal in the same spot it will surge up ...
December 16, 2010
2001 Honda Passport LX 3.2L Stall VIN: 456CK58W91
P0401: Insufficient EGR System Flow Detected. Customer complained of engine dying. Started dying at stops then dying while driving. Checked throttle body, it's clean. Customer had plugs and O2's replaced at another shop. Ran all tests and wiggle tests for throttle body. Engine has not died one time for us...
December 18, 2010