Ford P1260: Theft Detected (PATS) — Fix
On Ford vehicles, P1260 means the Ford PATS anti-theft system has detected a theft condition or an unrecognised key and immobilised the engine.
- Applies to
- Ford vehicles
- Est. repair cost
- $20 – $400
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include an unprogrammed/damaged key transponder, a PATS transceiver (ring) fault, or wiring issues. P1xxx codes are manufacturer-specific — P1260 is defined by Ford (not part of the generic SAE J2012 set), so this definition applies to Ford vehicles. Model years can vary, so confirm against the Ford service manual. Fix the fault, then clear the code with a scan tool.
Symptoms
- Engine cranks but won't start (or starts and stalls)
- Theft/security light flashing
- Key not recognised
How to fix it
- 1
Try a known-good key
1. Test with a spare programmed key to rule out a bad transponder.
- 2
Check the transceiver / reprogram
1. Inspect the PATS transceiver ring around the ignition. 2. Reprogram the key with the proper tool if needed, then clear the code.
Frequently asked questions
Why does my Ford crank but not start with P1260?
PATS cuts fuel/ignition when it doesn't recognise the key. Try your spare key; if that works, the first key needs reprogramming.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.