Check engine light on

Tiny
PAPET
  • MEMBER
  • 2000 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 325,000 MILES
I have a 2000 Dodge Grand Caravan and my problem is the check engine is on. And the trouble code is P0420. I have changed the EGR valve, O2, and the cat converter. The check engine light did not came on after a new cat converter was replaced, after 800.00 dollars!

I am having a trouble code of P0420 on my 2000 Dodge Grand Caravan. The O2 has been replaced so with the EGR valve and cat converter. But the cat converter was just a after market. What must be the problem why the check engine light is coming on even the code has been erased? Thank you very much.
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Tuesday, November 22nd, 2011 AT 5:46 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
If the same code keeps coming back, check for wiring issues to the O2 sensor. Make sure nothing has melted or has become damaged. Also, make sure the plug is clean and tight on the wiring to the sensor.
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Tuesday, November 22nd, 2011 AT 5:47 PM

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