How long till codes reset??

[kingbilly68]

I recently replaced all the parts for the p0449 code. I reset the engine code with my torque app. Then took it for an emissions test and it failed. I get one more free retest in 30 days. How long/ many miles does it generally take for the computer to drop the code from memory? Or is there another way to get it off there. Thanks.

 

[kingbilly68]

I forgot to mention that this is my wife's vehicle. She is a stay at home mom and rarely goes anywhere. That's the reason I'm worried about it clearing before my 30 days are up.

 

[Drewskiii]

Usually 50-100 miles on some vehicles to run a full cycle.. Just what i have been thought.. Try drive around 50 miles n go straight to smog if nomore engine light up after.. Someone correct me if im wrong.. Thanks

 

[sk1dm4rk]

Maybe this will help?

http://www.obdii.com/drivecycle.html


Regards,

Mark

 

[Erik G]

yes to the above, you need to complete the drive cycle

To perform an OBDII Driving cycle do the following:

1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
4. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
6. Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3.
7. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

 

[kingbilly68]

Thanks guys. I think if I drive it to work and back once (60 mile round trip)it should be good to go.


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