Ho2s readiness test procedure

Asked by Mar 10, 2013 at 02:35 PM about the 1999 Chrysler Sebring 2 Dr LXi Coupe

Question type: Maintenance & Repair

4 Answers


There is a rather lengthy drive "cycle" that can be performed to set all the OBD II readiness monitors right away. The procedure is too long to post here. But if you Google "OBD II readiness monitor drive cycle" I'm sure you can print it out from another website. If you can wait a few days just drive the car normally with between 3/4 & 1/4 tank of gas. Fuel level is important for all the tests to run to set all the readiness monitors. After 3 to 5 days all the readiness monitors will be set. HTH. -Jim

2 of 2 people found this helpful.

I didn't know about the fuel level stuff but just driving it normally should reset everything.

2 of 2 people found this helpful.

Yes, fuel level is important so the EVAP system readiness monitor will set. EVAP is the system that recycles gasoline fumes back to the engine to be burned up instead of being released into the air. -Jim

1 of 1 people found this helpful.

So what your saying is that a EVAPP system doesn't function with less than 1/4 or more than 3/4 of a tank until the monitors are set after about 5 days of driving.I say when the engine is in a closed loop pattern it will function no matter what.

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