Failed emission with p1443,po401 and po420. do I need to replace catalyic converter or how do I repair the problem... trying to sell work van.
P1443 is an EVAP code which means the purge control solenoid.P0401 is an EGR valve and code p0420 is a catalytic converter.
thank you Dana for your response. I understand what the codes are. Where should I start the process of elimination. I have read that doing one thing first will correct the problem of one or two of the codes. Where would you start first?
Oh yeah, I read PO420 that if you put lacquer thinner in the 1/2 filled gas tank it will burn and make the engine run cleaner... Is this true? or is this a crazy attempt...
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SOURCE: trouble codes PO174,PO401,PO420 NEED TO FIX SO I
P0174 means Fuel Trim too Lean (Bank 2)
P0401 means Exhaust Gas Recirculation Flow Insufficient Detected
P0420 means Catalyst System Efficiency Below Threshold (Bank
1)
Visit http://www.troublecodes.net/OBD2/
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SOURCE: codes are Po442,PO420,PO131 and PO401.I beleive
okay po442 isevap leak check gas cap amd right front tower in engine check evap line for broken hose,po131 bad o2 sensor top sensor on rear exhaust manifold,po420 is bad catalyic converter but could be o2 sensor.i would replace o2 first reset eng lingt and go from there, hope this helps good luck.
SOURCE: 96 ford escort lx failed emissions code #p1443
1996 ford escort runs fine with full power but check engine light comes on p1443 and i changed gas cap the light still comes on?
SOURCE: 2004 Mercury Monterey 70k CEL code PO401
po401 egr flow insufficient vaulve could be stuck or disconected
SOURCE: My Ford Taurus just failed a vehicle emission test
plz check the fuel and carborater first then go for silencer (if your car runned above 15000 kms got repair shop) even u can neglet, coz thees error come during winter sesion [they are related to carben and moister]
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