Information on diagnosing and repairing a DTC trouble code P0401 which is insufficient EGR (exhaust gas recirculation) flow.

P0401 and P0402 2000 Ford Taurus The check engine light on my 2000 Ford Taurus 24 Valve DOHC V6 came on and after scanning with an OBD2 Scan Tool, I received an P0402 …

Jan 21, 2007 · I used a scan tool and got a code for EGR insufficient flow or P0401. I REPLACE THE EGR VALVE AND GASKET (EASY) cleared the code and 40 miles later, the CEL was back.

I took it to AutoZone and the codes came back as: p0170 (fuel trim malfunction), p0401 twice (insufficient EGR flow), and p0471 (exhaust pressure sensor range/performance).

How to quickly diagnose, repair, and info on symptoms and causes of a P0299 DTC code which refers to an underboost condition with the turbo or supercharger system.

Nov 20, 2006 · P0401 on 97 Camry 4-cyl by cllewis » Mon Nov 20, 2006 3:45 am Got the P0401 code for the first time a couple months back; disconnected battery to clear code, CEL went out …

P0403 Exhaust Gas Recirculation Circuit Malfunction OBD-II Trouble Code Technical Description Exhaust Gas Recirculation "A" Control Circuit What does that mean? This diagnostic trouble …

P0404 Exhaust Gas Recirculation Circuit Range/Performance OBD-II Trouble Code Technical Description Exhaust Gas Recirculation "A" Circuit Range/Performance What does that mean? …

Exhaust Gas Recirculation Sensor A Circuit High What does that mean? This code is a generic powertrain code. It is considered generic because it applies to all makes and models of …

Sep 24, 2008 · 1999 Isuzu Rodeo P0401 by jamhtx » Wed Sep 24, 2008 4:30 pm I originally got code 401 and 405, figured I would eliminate the 401 code since it was all EGR issues. …