Check Engine Light Flashing

1998 DODGE INTREPID

68,000 MILES

RCARTH

MEMBER
3 POSTS
FOLLOW

My check engine light started flashing on my 98 Dodge Intrepid 6 cylinder 2.7L engine and I turned the key on and off 3 times and got these two codes (p 1684 and p0300) I am trying to find out what these codes mean? Also I was going through my manual and it stated that when the check engine light is flashing that it means that there is a catalytic Converter issues and could cause major damage. What could this possibly mean?

**Note**** I changed my oil today the same as I have for some time now****

Thanks

Sep 3, 2011 at 4:31 AM

JACOBANDNICKOLAS

CAR REPAIR CONTRIBUTOR
110,190 POSTS

The flash could mean a few things. The PO300 means there is an engine misfire. Make sure you didn't knock any plug wires loose while you worked on it today. The PO1684 indicates the battery was disconnected within the last 50 starts. The PO300 is causing the light to be on and flash. On or more of the cylinders are misfiring.

Sep 3, 2011 at 4:46 AM

RCARTH

MEMBER
3 POSTS

Ok thanks... So after I check the plugs will the check engine light reset itself?

Sep 3, 2011 at 5:14 AM

JACOBANDNICKOLAS

CAR REPAIR CONTRIBUTOR
110,190 POSTS

Once you identify and repair the problem, go to a parts store and have them (using a scanner) reset the light.

Sep 3, 2011 at 7:18 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.