Rick's Free Auto Repair Advice

Posts Tagged: EVAP codes

P0443, P1443, P1444, P1445 – Ford

Fix trouble codes P0443, P1443, P1444, P1445 – Ford For a P1433 code, check for loose, broken, kinked, or disconnected fuel vapor return hoses. Check the wiring harness issues discussed above. For a P1444 code, check the purge flow sensor connector. You may find a broken VPWR pin, or it may be damaged. Also check for a possible purge flow sensor harness signal that may be shorted to power ground. Finally, check for damaged wiring as described above. For a P1445 code, check possible purge flow sensor harness signal or … Read More

P0440, P0441, P0442, P0446 EVAP codes on GM vehicles

P0440, P0441, P0442, P0446 EVAP codes on GM vehicles Shops report problems with P0440, P0441, P0442, P0446 EVAP codes on GM vehicles. In order to troubleshoot any of the GM EVAP codes, it’s important to understand how the system works. The evaporative emissions system is designed to prevent raw gas vapors from entering the atmosphere. That means the entire fuel supply system must be sealed and tested on a regular basis. Gas vapors are absorbed by a canister of activated charcoal. When certain driving conditions are met, the engine sucks … Read More


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