My neighbor's CEL came on in his 1994 80 series. He took it to Autozone and they said their machine couldn't read it. Anyone know what he should do?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Both answers within minutes from guys who own OBD1 FZJ's and early 70's pickups....
You can check your o2 sensors at the same terminal you used to check the codes.
Put a volt meter on DC volts and check the voltages at OX1 (first o2 sensor) and TE1 (ground)
...
Your rear o2 sensor OX2 should not sweep that much since it is behind the cat. converter
Is the 1993 a OB1His '94 is OBD1 and you can simply use the paperclip method to jumper terminals TE1 and E1 located on the black "Diagnostics" box on the passenger side under the hood. Turn the ignition to ON and read the blinks. There should be several posts that go into more detail on this but that's the quick version.
More information here: Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical
--Mark
Is the 1993 a OB1
And would I be able to use the paper clip method
Looks like knock sensor fault?Just pulled my CEL on a ‘93 and got 55 which I didn’t see on the list above. It was definitely 5 blinks then a long pause then 5 blinks again. There’s a weird bypass near the EGR valve and heater control valve and a duct taped intake hose that could be causing a weird code, but it’s funny to me that it was consistently 55 with no other codes thrown. Any thoughts?
View attachment 2724998
View attachment 2724997
Thanks for the link! Will start here and report back once I dig in.