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Technicaldan, Technician
Category: Ford
Satisfied Customers: 112
Experience:  Accredited
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2000 Ford f150 theft light code 31? : How to reset? :

Customer Question

2000 Ford f150 theft light code 31?
JA: Have you checked the fuses? Have you tried to reset the computer?
Customer: How to reset?
JA: Tell me a bit more about what's going on so he can help you best.
Customer: instrument cluster went up in smoke, got complete system from a 99. cluster, ignition key & wiring and pcm. installed all, now theft light flashes a code 31?
JA: Are you hoping to fix this yourself?
Customer: yes if I can?
JA: Great! What have you tried so far? Is there anything else the Ford Mechanic should be aware of about your Ford?
Customer: no, just need to know what code 31 relates to?
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Ford Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Ford
Expert:  Technicaldan replied 1 year ago.

According to the following site,

Ford anti theft light flash code 31, means incorrect code to diesel smart module.

Is this a diesel? Or alternative fuel with a control module?

Do you have access to diagnostic equipment, as electrically the on-board systems will now think they are the other car, in which case you need to program the module in that is still with this car or change it from the other one.

Expert:  Technicaldan replied 1 year ago.

Let me know the full details and I will dig further if needed.

Customer: replied 1 year ago.
Not a diesel, no I only have a obd unit. Does this mean an expensive tow & visit to. Ford dealer?
Expert:  Technicaldan replied 1 year ago.

If will double check for you shortly but it would appear so unfortunately, you likely will need the details of the vehicle the parts came from also.