P0401 Diagnostic Trouble Code Discussion for February 2018
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 1999 Toyota Tacoma Pre Runner 2.7L MIL Lamp on VIN: 4TANM92N8X P0401: EGR System Insufficient Flow Detected. I replaced VSV on intake, it was dead when 12 volts applied. I have no vacuum from throttle body to vsv, even connecting vacuum gauge straight to port. I removed throttle body and cleaned thoroughly, blew carb cleaner and air through all the ports, they ar... |
February 08, 2018 |
