Hey Guys I have a 2017 F-150 with a 5.0 v8
I have been getting a error code that only comes up when its cold outside and I start the engine.
it reads P1450, However after I drive it a few minutes and clear the code its gone and wont come back until its sits a while and its cold again.
Initially my mechanic thought it was a over filling situation IE topping it off- but I don't do that
its a EZ fill tank so no gas cap per say.

Would like to fix this issue any help would be great

 

Check for a leaking purge valve.

 

Google F150 error code P1450 and plenty of videos. Seems main cause is the purge valve, pretty easy fix. I'd seek a different mechanic if I were you, just sayin. Hope you get it repaired easy and cheaply, good luck.

 

P1450 - Unable to Bleed Up Fuel Tank Vacuum

Description:
This DTC sets when the evaporative emission (EVAP) running loss monitor detects excessive fuel tank vacuum with the engine running, but not at idle.

Possible Causes:

• EVAP purge valve stuck open
• Blockages or kinks in the EVAP canister tube or EVAP canister purge outlet tube between the fuel tank, the EVAP purge valve and the EVAP canister
• Fuel filler cap stuck closed, preventing vacuum relief (if equipped)
• Capless fuel tank filler pipe damaged, preventing vacuum relief (if equipped)
• Contaminated fuel vapor elbow on the EVAP canister
• Restricted EVAP canister
• EVAP canister vent valve stuck partially or fully closed
• Plugged EVAP canister vent valve filter
• VREF circuit open
• Damaged FTP sensor

Diagnostic Aids:
Visually inspect the EVAP canister inlet port, EVAP canister vent valve filter, and EVAP canister vent hose assembly for contamination or debris.

Check EVAP purge valve for vacuum leak.