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Tiny
VELATRANS
  • MEMBER
  • 2005 CADILLAC STS
  • 84,500 MILES
The check engine light is on. Just came on yesterday, We changed the gas cap but its still on. The code reading at Auto Zone said EVAP leak, gas cap or hose lose. We dont have a lot of money and are suppose to go out of town tomorrow. Any assistance would be great. What should we do?
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Thursday, April 25th, 2013 AT 1:33 PM

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Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
What was the exact code number?
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Thursday, April 25th, 2013 AT 2:43 PM
Tiny
VELATRANS
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  • 3 POSTS
P0422
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Thursday, April 25th, 2013 AT 3:18 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That's not an EVAP leak. It's not even an EVAP code.

Main Catalytic Converter -Efficiency Below Threshold (Bank 1)

It means you need a new Catalytic Converter.
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Thursday, April 25th, 2013 AT 3:47 PM
Tiny
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  • 3 POSTS
Maybe is p442
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Thursday, April 25th, 2013 AT 4:52 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Yes, that is for a small EVAP leak. The way you find that is with a machine that fills the system with smoke and the smoke will escape through the leak. You'll have to call around to local shops to see which one has a smoke machine.
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Thursday, April 25th, 2013 AT 4:57 PM

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