The DTC P0449 is: EVAP Emission Control System Vent Vlv/Sol Malf
Straight out of my code book. Hope this helps you out.
Here is a video on how to fix engine code p0449
The most probable cause is a vacuum leak or a bad fuel cap. Inspect all the vacuum hoses for damage and buy a new fuel cap, making sure it is tightly on the vehicle.
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Check your charcoal fuel canister. I had the same problem changed the light went out. The problem fixed.
How can I repair the code po455 on my 2006 Chevrolet Silverado after replacing gas cap evap-canistor and a leak in a vacuum line.
The cost to fix code P0449, which relates to an evaporative emission control system fault, can vary widely depending on the underlying issue. Simple repairs, such as replacing a faulty gas cap or a loose hose, may cost around $50 to $150. More complex repairs, involving parts like the purge valve or the ECM, can range from $150 to $500 or more. Always consult a trusted mechanic for an accurate diagnosis and estimate.
how do you clear a P1000 code on a 2003 ford expedition
Trouble code P1111 means: IAT Sensor Circuit Intermittent Voltage High
Rebuild trans. Pay someone to do it too.
Look for a leak in the port-side vacuum.
You will have to get a engine scanner and scan the engine. And it will give you the trouble code or codes, and then fix the problem. The computor is seeing a problem in the engine system or transmission system. Need to repair.
depending on the damage, you probably need to buy a new one.. go to your local junk yard.