How do you pull trouble codes on a Ford F-150 without a scanner?

Answer 1

All you need is a paper clip, a test light or a short piece of wire. Next to the connector for the DTC scanner you will see a small single gray connector.

Shove any one of those 3 items into the gray connector.

If you choose a test light connect the terminal to the negative battery post.

For a paper clip or wire connect it to the lower right hole in the connector for the dtc scanner.

Turn the key to on / run but do not start the vehicle.

Count how many times the check engine light flashes and that is the code/ codes.

For another version of the test start the vehicle and count how many times the check engine light flashes and that is the code/ codes.