The P1264 error code on Ford vehicles indicates a potential problem with fuel injector number 4. Several factors can cause this code:
- Faulty fuel injector 4: The injector itself may be out of order.
- Fuel injector 4 wiring issues: The wiring harness may be interrupted (open) or short-circuited.
- Poor electrical connection: A faulty electrical contact at the connector of injector 4.
- Failed fuel injector interface module: The module controlling the injector may be defective.
How to fix the P1264 code on a FORD?
The first step is to carefully examine the possible causes mentioned above. Start with a visual inspection of the wiring harness and connectors associated with fuel injector number 4. Be attentive to any signs of damage on the cables and check the condition of the connector pins: ensure they are not broken, bent, pushed in, or corroded.
Important technical note:
It is crucial to prioritize checking the connections of the wiring harness located at the valve cover, including those under the valve cover itself.
Symptoms associated with code P1264:
The most common symptom is the illumination of the engine light (or the “Service Engine Soon” warning light).
Meaning of code P1264 in FORD:
Fuel injectors are supplied with high-pressure fuel via the injection rail and are responsible for injecting a precise amount of fuel directly into the combustion chamber. The injector actuation is achieved by a piezoelectric system, controlled by the Powertrain Control Module (PCM). During the main injection phase, the activation duration is approximately 0 to 400 microseconds. The accuracy of the injection cycle is ensured by the precise control of the injectors’ opening and closing times through the piezoelectric actuator. The P1264 error code is detected by the fuel injector interface module when it identifies a problem in the secondary fuel injector circuit (usually the injector located at the rear, in this case, injector number 4).