Questions & Answers for: p401

...cycles up and down. Y N | Replace the Printer Engine Controller PWB 8 Measure the voltage between P401-1 and P 401-4 when the Fuser Fan cycles up and down. There is 24VDC between P401-1 and P401-4 ...

1996 Goe Prizm 1.6 P401 96 Geo P401 (insufficient flow detected). No ground signal at egr solenoid in drive while power braking. Does not stall with egr removed. There is vacuum at intake port when ...

...after driving for a while. Computer checker shows code 401 in error - possibly egr valve. code P401 is exhaust gas recirculation-insufficient flow

p401 emission code ford escape 2001 6cyl 2001 ford escape 6cyl. Code p401 called for a replacement of the egr valve. Replaced egr valve and dpfe sensor. Computer reset itself (finally)after driving it

I have a Ford expedition 4.6 and continue to get a P401 code. I have replaced the EGR manifold, sensor and DPFE sensor. I also had an intake cleaner with the machine done and still continue to get the

I have a 2000 mazda protege. I took it to get the emissions done and my car failed. Codes P401 system too lean bank 1 and the oxigen sensor. I replaced the o2 sensor and that code went away. I ...

check engine is on and had it checked an got trouble codes p401 and p402. adise please. trouble codes p401 and p402 P0401

and the air smells bad, seems like coming from the engine room. Another thing is I found there is a P401 alarm which shows the back side of catalytical converter failed. Is there someone know what&

p401 getting a p401 code when I take my car for inspection There are several possibilities for this problem. If you have a 4.6L V-8, there is usually a problem with the channels for EGR flow. On this ...

97 ford escort p401 code Vehicle has code p401 for ins. flow for egr valve-has new egr vale, new slnoid and new dpfe sensor, all hoses and connections good-not sure if selnoid getting ground from comp