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Toyota T100 Car Problems

Check Engine Light Due to Restricted EGR System on Toyota T100

Problem Description and Solution

The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the EGR passages and the EGR Temperature sensor. Our technicians tell this repair is pretty straight forward and takes about 1-1.5 hours. It is also wise to verify the EGR system components i.e. the Transducer, EGR Valve and VSV Solenoid at this time.

(11 people reported this problem)

Problem Data

RepairPal Verified
Average mileage: 203,000 (203,000–203,000)
6 model years affected: 1993, 1994, 1995, 1996, more1997, 1998

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Brake problem? Or maybe a faulty head gasket cylinder?
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Viewing 1-2 of 2 comments
Code P9402 excessive flow. Runs amazing at first then the CEL comes on and the same code all the time. All new vacuum hoses but I suspect the VSV might be the problem.