When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
1990 E350 RV with 460 CID engine, E40D transmission.
I bought a Ford-compatible ODB1 code reader and ran my codes with it.
I get an 11 (all clear) on Key On Engine Off testing, but a code 67 for a Continuous Memory code. There are multiple ways to interpret 67 depending on car, truck, or transmission type. I *think* it is checking for the neutral/park switch on a manual transmission, but I'm not sure.
Yup, I actually hit that one when google searching.
I think it is only relevant to manual transmissions, unless the AC is running during the test. I thought I had turned the AC off - I'll have to check again.