Code p0446, have evap leak

2004 FORD F-150
169,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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CSTEVENS72
  • MEMBER
  • 1 POST
can't find the leak. Just wondered if you could give me some advice. Thanks
Jul 27, 2020 at 12:00 PM
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BMDOUBLE
  • ✓ASE Certified Mechanic
  • 1,139 POSTS
  • ASE Certified Mechanic
I would start by doing a thorough inspection of the canister vent valve and wiring that sits above the spare tire. This area is susceptible to corrosion and moisture. I usually disconnect the connector and have a look at the pins to make sure they are clean and clear. With the key on one of the pins should have twelve volts and the other will only ground when the PCM commands it.
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Jul 27, 2020 at 2:16 PM
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