Toyota Corolla Problem Report

Toyota Corolla Check Engine Light Due to Restricted EGR System

(33 reports)

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.

egr restricted flow replaced all components -
Engine Code P0401 showed up on my scanner. Just needed to replace the Vacuum Control Module. Cheap and easy. Love my car! -
Cleaned EGR but CEL still on:( -
Egr.code p0401 corolla 97. Change egr vale egr modulatorclean intake still check engine light come back -
EGR is block -
Code 71 EGR Temperature -
I am having toyato corolla 2004 I am suffering a problem at the time when car is stopped or not working for more than 5 to 6 hours there is problem like when we start the car it starts immediately but after half minute engine stoppes and than -
Running just fine, then hopping on the Interstate the Check Engine light came on. I am not aware of any running issues with this car. -
Check engine light turned on. EGR valve completely clogged. Cleaned valve and reset engine light. -
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