Codes 0442 and 0445

Tiny
MICHELLE FELTNER
  • MEMBER
  • 2003 JEEP GRAND CHEROKEE LAREDO
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 220,000 MILES
Need to know what codes 0442 and 0445 mean.
Sunday, August 27th, 2017 AT 4:18 PM

1 Reply

Tiny
HARRY P
  • MECHANIC
  • 2,293 POSTS
P0442 and P0445 both indicate evaporative emission eontrol leaks. Essentially, too much gas vapor is getting out. For both codes, the most likely cause is a bad or missing gas cap. So replace it, clear the codes, and drive it a few days. See if it comes back.

Here are a couple of articles regarding: Evaporator
1- https://www.2carpros.com/articles/how-emission-control-systems-work
2- https://www.2carpros.com/articles/evap-system-code-repair

Good luck and let us know how it goes.
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Sunday, August 27th, 2017 AT 7:58 PM

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