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P0443 code

Tiny
FREDNAN
  • MEMBER
  • 1996 FORD F-150
  • 5.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 131,000 MILES
This truck does not have a canister purge valve that I can find.
Monday, October 23rd, 2017 AT 6:57 AM

9 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I posted a diagram of where it is.
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Tuesday, October 24th, 2017 AT 8:52 AM
Tiny
FREDNAN
  • MEMBER
  • 4 POSTS
This truck does not have one at this location. I have seen this diagram before and none of the vacuum hoses match. The truck has no pressure sensors in the gas tanks or a purge valve on the canister. The system looks like what ford calls a probe system but it has no purge valve on the charcoal canister. I replaced the vacuum control valve now the problem is intermittent, but I still get a p0443 code.
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Tuesday, October 24th, 2017 AT 10:37 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
That truck lists that code on my online repair information and the top fix for the code is to replace the canister purge solenoid.
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Tuesday, October 24th, 2017 AT 1:11 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
That is from the wiring diagram for your truck it is called a vapor management valve in the wiring diagram.
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Tuesday, October 24th, 2017 AT 1:15 PM
Tiny
SATURNTECH9
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I posted the three types of valves they use on your truck.
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Tuesday, October 24th, 2017 AT 1:21 PM
Tiny
FREDNAN
  • MEMBER
  • 4 POSTS
That is what I replaced the vapor management valve. Could I have a vacuum leak with this code? I cannot find a canister purge valve. Thank you
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Tuesday, October 24th, 2017 AT 1:38 PM
Tiny
SATURNTECH9
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Yes, you might have a leak. I posted a couple more diagrams that will be helpful I would say the management valve would be the equivalent to the canister purge valve.
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+1
Tuesday, October 24th, 2017 AT 1:50 PM
Tiny
FREDNAN
  • MEMBER
  • 4 POSTS
The diagrams are what I have. I am searching for leaks now. Thanks for the help. You confirmed that there is no separate vent purge on this truck. Thanks again.
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Tuesday, October 24th, 2017 AT 1:57 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Your welcome keep us posted.
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Wednesday, October 25th, 2017 AT 8:01 PM

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