I have a 1995 Nissan truck, the Check Engine light occasionally comes on. I pulled the pax seat and screwed the diag adjustment fully clockwise to get the codes.
It is blinking 1... 2... 3... 4... 5... and repeating.
Does anyone know what this might be? I replaced the O2 sensor, no luck.
Google does not seem to produce a code list for this truck.
Also, It had an occasional miss, which went away after I replaced the plugs and wires. But the CE light keeps coming on. And the fuel economy is HORRIBLE.
Any suggestions appreciated.