P0401 Diagnostic Trouble Code Discussion for January 2004
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 1999 Honda Passport EX 3.2L Check Engine light VIN: 456CM58W6X P0401: Insufficient EGR System Flow Detected. Check engine light came on for egr code, I replaced egr valve and cleared codes. Customer drove vehicle for approx 20 miles and check engine light came back on with same egr code. No driveability problem before or after replacement of egr valve. |
January 03, 2004 | |
| 1999 Honda Odyssey LX 3.5L MIL Lamp on VIN: 2HKRL1852X P0401: EGR System Insufficient Flow Detected. Vehicle has CEL on with code P0401 insufficient EGR flow. Found passage restricted in bottom of intake manifold. Cleaned passages. Road tested, monitor completed and passed but would not turn off the CEL. Our question is will the computer turn off the CEL or d... |
January 07, 2004 | |
| 1999 Honda Accord EX 3.0L MIL Lamp on VIN: 1HGCG1656X P0401: EGR System Insufficient Flow Detected. This car has had a new EGR valve after passages were verified clear.The flow chart test only "proves" the problem is intermittent.Great , but now what do I do.The customer is being patient, but for how long?I don`t want to just throw parts at it (compu... |
January 14, 2004 | |
| 1998 Toyota RAV4 2.0L MIL Lamp on VIN: JT3GP10V2W P0401: EGR System Insufficient Flow Detected. Hello everyone, This car has the egr PO401 in it. I ck the egr with hand held vaccum pump and it killed the engine. Ck for vacuum at the egr valve and there wasn't any, ck and replaced transducer. Now I have 20in of vaccum at egr valve, and the egr valve is o... |
January 22, 2004 | |
| 1996 Acura RL 3.5L MIL Lamp on, po401 egr code VIN: JH4KA9656T P0401: EGR System Insufficient Flow Detected. this car will recode with the same po401 approximately every 3000 miles.egr insufficient flow. inspected egr passages and found them extremely clean.ran a chemical carbon remover through it and then replaced egr valve assembly using genuine lexus parts...still... |
January 28, 2004 |
