R Rhonda T New member Nov 12, 2009 #1 I have a 1994 Dodge Intrepid, the check engine light is flashing...The code is 21...Can someone please tell me what this means?
I have a 1994 Dodge Intrepid, the check engine light is flashing...The code is 21...Can someone please tell me what this means?
E eferrell01 New member Nov 12, 2009 #2 •21 Oxygen sensor signal doesn't change (stays at 4.3-4.5V). Probably bad oxygen sensor
