How to resolve Ford P1464 trouble code?

2 Answers
VonCarter
07/24/25 11:15pm
Possible causes include the air conditioning switch being in the ON position during self-test, faults in the air conditioning power supply circuit, ACCS circuit malfunctions, or issues with the A/C request switch. When clearing the trouble code, it is essential to follow the specific clearing procedure designated for the vehicle model.
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Liam
08/10/25 3:18pm
Last month I just dealt with this P1464 trouble code. It's a Ford EVAP system control issue. First step, try opening and retightening the fuel cap - sometimes a bad seal will trigger this code. Second step, check the charcoal canister purge solenoid valve, usually located on the side of the engine bay. Use a diagnostic tool to test if it's stuck, or unplug it to check if the voltage is around 12V. While you're at it, clean the canister vent - dust buildup can cause blockage. If the solenoid's clicking sounds abnormal, it's probably time for replacement. I spent about 200 yuan on an aftermarket part last time - after replacement remember to use a 431 diagnostic tool to clear codes and run a self-test. Finally, pay special attention to vacuum lines - older cars' rubber hoses tend to crack, and even a small hole can cause vacuum leaks affecting system operation.
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