Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 1999 Mercury Tracer, 1999 Mercury Sable, 1999 Mercury Mystique, 1999 Mercury Mountaineer, and 1999 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

Perform this test when instructed during QUICK TEST or if directed by other test procedures. This DTC indicates that anti-theft system has been activated. When activated, anti-theft system will disable fuel system. To disarm anti-theft system, use key or remote keyless entry to unlock door.

1) Check For Other DTCs

If any other DTCs are present, service DTCs as necessary before continuing. If no DTCs other than P1260 are present, go to next step.

2) Attempt To Start Engine

Use key or remote keyless entry to disarm anti-theft system. Clear PCM memory. Attempt to start engine. If engine starts, no problem is indicated at this time. Testing is complete. If engine does not start, go to next step.

3) Check For DTCs

Perform QUICK TEST . If Continuous Memory DTC P1260 is still present, fault is in anti-theft system. See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT. If Continuous Memory DTC P1260 is not present, DTC P1260 is not cause of no-start condition. See TROUBLE SHOOTING - NO CODES - EEC-V article for no-start diagnosis.