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.
Check Engine Light Due to Restricted EGR System on Toyota Land Cruiser
Average mileage: 203,490 (130,000–239,000)
15 people reported this problem
4 people shared problem details
1994 Toyota Land Cruiser239,000Visitor
Failed emission with high nox. Clean EGR (that's what mechanic said). Still failed.
1994 Toyota Land Cruiser225,000Visitor
EGR fail with debris in intake manifold
1993 Toyota Land Cruiser233,450Visitor
Failed emissions due to nox gas
1997 Toyota Land CruiserVisitor
Can't find solution yet. Have replaced all three components with no improvement of PO401 check engine code. Passageways are clear. Problem appeared at 150k miles.
Over the time the exhaust gas recirculation (EGR) system may become plugged with debris, the ox...
The Check Engine Light may illuminate due to an evaporative emission (EVAP) system fault. Our t...
How do I Reset this Control Module. When I was hunting at 8000 feet my egr valve light came on....
My 1985 FJ60 Failed Smog. I repaired the EGR, Complete Tune Up, and a New Cat Converter tomorro...
1975 FJ40 EGR LIGHT STAYS ON. I TRIED DISCONNECTING TO BATTEREY BUT LIGHT STILL STAYS ON. DOES...