P0401 - EGR flow insufficient – HOW TO…
11-13-14, 01:39 PM
#46
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Join Date: Nov 2014
Location: nc
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Perfect instructions. Just replaced 1 in the driveway today. Oreilly was the only local store to have the part in stock for 38.99. AZ was 78.99, and Toyota was 98.99.
08-24-15, 07:49 PM
#47
Driver School Candidate
p0401 came on on my 1994 three weeks ago. Went through the steps here and replaced the modulator from eBay. Problem gone away and everything works. Thanks for the detail instructions.
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