Code p0443 refers to EVAP canister purge valve--circuit malfunction===causes --wiring---EVAP canister purge valve--ECM
code p0451 refers to EVAP pressure sensor --range/performance problem===causes --EVAP pressure sensor
code p0135 refers to heated oxygen sensor(HO2S) 1 bank 1 heater control --circuit malfunction===causes --fuse--wiring--HO2S ---ecm
basically the HO2S sensor is not stable and altering the air/fuel mixture settings for the ECM and this is not being helped by a faulty EVAP purge valve and pressure sensor.
SOURCE: check engine light on , code po443 1998 sonata
To cause a P0443, there has to be a problem with the purge control CIRCUIT, not necessarily the valve. Usually they are a unit housing the valve and the solenoid as an assembly. Or it could be comprised of a separate solenoid with vacuum lines to a purge valve. That said, it could be any of the following:
I would just clear out the code and if it returns then try the above. Hope this helps you a little bit!
Sincerely,
JC
SOURCE: P0340 CODE COMES UP,SENSOR REPLACED
i have 2000 cadillac deville runs really good it has a po340 engine code runs good b when i come to a complete stop the engine idles up and down only at a complete stop what do i need to do
SOURCE: check engine light on my 2003 sienna, DTC was
Oxygen Sensor Connector locations
Oxygen Sensor testing
I really hope helped with this. Remember rated this help, good luck.
SOURCE: po443 code 2002 ford taurus
That code is for the Evaporative Emissions. It could be a bad Evaporative Emissions Canister Valve or just a bad vacuum line or my granddaughter's 1997 Ford Escort had that code and her gas cap was NOT on. Now when you figure out what one it is disconnect the battery for 10 minutes to reset the computer.
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