Error Code P0449: What It Means & What To Do?

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The P0449 trouble code would start appearing when the computer would detect that the EVAP system is not functioning properly. It would start indicating that there is a part of the EVAP control system which is not working as it should. There are a number of parts in the EVAP system like the gas cap, carbon canister, fuel lines, purge valve as well as some other hoses. The EVAP discharge control system would prevent the escape of the fuel vapours from the fuel system of the car. The fuel vapours are then routed through the hoses to the charcoal container for storage. Now when the car engine would start running, then the purge control valve would be opened and thus it would allow the intake vacuum to draw the fuel vapours to the car engine.

The P0449 is a diagnostic trouble code which would trigger up when there is a malfunction in the evaporative emission control system. This trouble code can be seen in some other EVAP system codes as well.

The fault code P0449 can be described as Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction.

What causes this problem with the Evaporative Emission Control System Vent Valve/ Solenoid Circuit Malfunction?

• The ECU might have some flaws
• Electrical connection might be of poor quality
• There can be a short or open in the wiring harness
• Some failure in the charcoal canister vent valve

1. Evap Purge Valve - There can be some issues with the Evap Purge Valve due to which you may see P0449 code appearing over and over again. Visit us to buy best quality Evap Purge Valve online.
2. Gas Tank Sealer - A lot of issues can arise do to defective Gas Tank Sealer. Did you just see P0449 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Purge Solenoid - Faulty Purge Solenoid can be the reason why P0449 code is flashing. Visit us to purchase top notch Purge Solenoid online.
4. Fuel Tank - It is an important auto part which needs full care. A faulty Fuel Tank can be a reason behind the flashing up of P0449 code.
5. Charcoal Canister - OBD Code P0449 can appear because of faulty Charcoal Canister. Find high grade Charcoal Canister online with us.
6. Carbon Canister - P0449 error code also relates to problems with the Carbon Canister. Find top quality Carbon Canister with us.

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0449 here:

Common Symptoms

• The check engine light can start illuminating and the code might be set in ECM memory
• There can be a fuel vapour odour in or around the vehicle

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

• The damaged wiring harness should be repaired or replaced as per the need
• You can always replace the charcoal canister vent valve
• Repair the defective electrical connections
• The quirky ECU should be replaced

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Here are some steps which you should follow in order to diagnose this fault code:

• Uses a scan tool to check for any codes stored in the ECU including history or pending codes
• Take note of the freeze frame data associated with the codes this is the conditions the vehicle was under when the malfunction set the Check Engine Light
• Clears all of the codes
• Takes the vehicle on a road test to confirm any symptoms that are present
• Performs a visual inspection of the wiring harness and the vent valve looking for any damage
• Uses an advanced scan tool to operate the EVAP functions and enables the vent valve to function, checking for proper operation
• Checks for continuity between the vent wiring and ECU
• Perform a test on the ECU 

Common Mistakes When Diagnosing The P0449 Code

• Sometimes common mistakes can be made with any code when steps are not followed or aren’t completed at all
• All the parts must be tested for proper operation thoroughly before they are replaced otherwise perfectly working parts may be replaced unnecessarily