Question about 1997 Ford F150 Regular Cab

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Po443 engine code ford f-150 - 1997 Ford F150 Regular Cab

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Posted on Jan 02, 2017

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SOURCE: Describe your 1996 Ford Explorer Problem..trouble

Diagnostic Trouble Code (DTC) P0443 indicates a failure in the EVAP canister purge valve circuit.
Possible causes:

  • VPWR circuit open.
  • EVAP canister purge valve circuit open.
  • EVAP canister purge valve circuit shorted to PWR GND.
  • EVAP canister purge valve circuit shorted to VPWR.
  • Damaged EVAP canister purge valve.
  • Damaged PCM.

Posted on Aug 01, 2009

  • 95 Answers

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.

Posted on Jan 16, 2010

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Replaced front and fuel tank evap solenoid still getting po443 code on 2011 chevy cruze what is a solution


Try a new gas cap, that is usually the culprit. Around $20 on up for keyed at any part store. And easy to put on.

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Code po443


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.

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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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Po443 code


po 443 bad evap purge vavle.

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Check Engine Light


with the purge valve powered up vacuum should flow through it. the purge flow sensors can go bad on these (between engine and purge valve)

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