"Not Ready" for OBD Emission test...? Topic is solved

[kallekula]

The P80 platforms are one of the early OBDII systems that may take some time to collect enough data to show "ready" for testing. Volvo's are not alone in this tendency, and some states maintain flexibility in testing protocols and readiness monitors. Maryland does not appear to be one of them.

Generally, the following driving cycle performed twice is sufficient to reset the monitors:

Start with the vehicle cool, below 122 degrees F.
Turn off the air conditioning.
Select a location where the driving can be done without violating traffic laws and you can stop safely at the side of the road.

1. Start the engine and accelerate to approximately 1500-2000 rpm.
2. Drive for 6 minutes at 1500-2000 rpm.
3. Stop the vehicle and remain at idle in drive for 70 seconds.
4. Accelerate to at least 45mph and drive for 5 minutes at 1800-2200 rpm.
5. Stop the vehicle and remain at idle in drive for 60 seconds.
6. Accelerate to at least 45 mph and drive for 4 minutes at 1800-2200 rpm.
7. Stop the vehicle and remain at idle in drive for 60 seconds.
8. Park the vehicle and turn off the engine.

Alternatively:

1.) Accelerate 0-50 MPH within 30 seconds
2.) Maintain 45-50 MPH for 20 minutes without using cruise control
3.) Park car turn off A/C idle for 5 minutes
4.) Accelerate 0-50 MPH within 30 seconds
5.) Maintain 45-50 MPH for 20 minutes without using cruise control
6.) Shut off car and allow to cool for 30 minutes before repeating cycle ( in some cases the car requires two cycles)

An OBDII reader is a must-have tool for any DIY diagnosis and repair, but unless there is a check-engine light, reading codes isn't your problem here, it's a lack of data from a recent reset.

Tried alternative 1 today with my XC90 and it worked right away! Thank you for posting this!

[dyn blin]

Tried alternative 1 today with my XC90 and it worked right away!

Woot! 'wish we had your So Cal weather last weekend.

[abscate]

It must be terrifying when water comes from the sky instead of the faucet

[dyn blin]

Indeed, hard to remember to keep the mouth closed so not to drown when we look up to see where the sun went...

[abscate]

Indeed, hard to remember to keep the mouth closed so not to drown when we look up to see where the sun went...

Just like turkeys...

Hope you are all safe..