P0401 Diagnostic Trouble Code Discussion for March 2004
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 1995 Toyota Tercel DX 1.5L MIL Lamp on P0401: insuff. egr flow detected. ... months ago car came in with p0401 code. Cleared codes and released car to customer -- light returned on way home. Car was taken to another shop (with out avail), and eventually came back to ours. Once in shop first tested egr function -- sticky at best, ho... |
March 01, 2004 | |
| 2000 Toyota Tacoma DLX 2.7L MIL Lamp on VIN: 4TAPM62N6X P0401: EGR System Insufficient Flow Detected. This one had this code and a cracked exh manifold. Replaced manifold and removed EGR valve to bench test, tested good. Tested VSV and EGR temp sensor, both good. After test drive MIL came back on. Test with vacuum gauge shows no vac in system. Chased it down, ... |
March 24, 2004 |
