Mrs JT tested her 2019 Odyssey for emissions today. The OBD2 test showed that multiple monitors have not had an opportunity to run. This is strange since she has driven the van over 1500 miles since it was in the shop last. This happened three years go when she had emissions tested. Does anyone have an idea what to do? We took three 300 mile round trips and a lot of other driving. Any help is appreciated. BTW, three years ago she went to the dealer for this. They did something and it passed. There was no charge, she didnāt get a receipt, and here we are again. Before we go to the dealer again, I thought Iād get your suggestions.
Exactly which readiness monitors are incomplete?
Software problem???
Microsoft Word - A21-010 WE MIL Comes On with DTC P0430 (without) WORKING COPY.docx
The report from the emissions test doesnāt say which ones are incomplete. Can we read them with an auto parts store scanner?
Mrs JT told me since my OP that she thinks that the dealer may have done a system reset. Do you think itās worth a try? If we do it, Iām sure all the readiness monitors will be reset. Maybe I should get the monitors read before doing a system reset.
That service bulletin does not address readiness monitors. Thanks for posting though.
Yes, any even halfway decent scanner should show the status of each readiness monitor
Tester
Thanks, @tester. Unfortunately, all of those readiness monitors appear to be set. I just returned from the auto parts store. Only the OBD and ABS readiness monitors are not set.
After reading your list, Iām not sure that the parts counter guy knew what I was looking for. Since ABS is not part of the emissions system, there shouldnāt be an OBD2 test for it, correct? Also, an OBD readiness monitor is too vague. I need to find someone that knows what they are doing. Maybe Sunday night isnāt the time to get the OBD2 system read.
Oh, and none of the readiness monitors on the list in your reference were unset. We have several weeks to get this straight before we are in violation.
A trip around the block usually worked for me.
For catalyst and oxygen sensor monitors to begin testing, the throttle must remain open for a given amount of time, usually 2 minutes. Those who apply then release the accelerator pedal repeatedly will have difficulty passing monitors.
The monitor tests were probably interrupted, aborted or timed out early in the trip. As George posted in the past, long trips a not the solution.
He operates the cash register.
You could buy a scan tool, a basic scan tool costs $40.
After 10 minutes with the scan tool, you should be familiar with the functions.
The first screen view is the preview, the second shows the details.
Monitor status can be āOKā, āIncompleteā or āNot/Applicableā.
I didnāt read through the links, so not sure if this was mentioned, but you need to run between 1/4 and 3/4 tank of gas to get some monitors to complete on some vehicles, I have found that is one of the main reasons vehicles will not complete the monitors when everything is working as it shouldā¦
So stop the fill up at 3/4 tank of gas and do not let it go below 1/4 tank of gas until the monitors are all completedā¦
That is true, the practice of refilling the tank at each stop during a trip could result in one or more incomplete monitors even after 1000 miles of driving.
I bought a scanner, the Innova 5010. Itās a code reader, but from a reputable company. All I/M monitors completed except the EGR. Itās flashing at what I think is a slow rate, meaning that itās not complete. There are no DTCs. Suggestions?
āWhen a Monitor icon is flashing red, it indicates that the vehicle supports the associated Monitor, but the Monitor has not yet run its diagnostic testing.ā
Iām assuming thatās your situation? The āEGā led is flashing red?
āMONITOR STATUS - If the Code Readerās LCD display shows a zero (indicating there are no DTCs present in the vehicleās computer), but the yellow LED is lit, it indicates a āMonitor Has Not Runā status. This means that some of the Monitors on the vehicle have not yet finished their diagnostic self-testing. This condition is confirmed by one or more blinking 6 Using the Code Reader CHECKING FIRMWARE VERSION - ERASING DIAGNOSTIC TROUBLE CODES monitor icons on the LCD display. A blinking Monitor icon means the Monitor has not yet run and finished its diagnostic self-testing. All Monitor icons that are solid have completed their diagnostic self-testing.ā
Sounds like youāre either not meeting the requirements for the EGR readiness monitor to run to completion . . .
Tester
Final resolution: it passed.
I ran a drive cycle and the EGR monitor didnāt complete. Mrs JT decided to go back and get the van tested again since it doesnāt cost extra. She ran a drive cycle on the way to the emissions test facility. I told her to get a tech to test it and discuss it with him if it failed. They talked anyway and he said that Odysseys often failed because of a software problem. He thought our van would fail again, but no! It passed.
Mrs JT said that two years ago she had the same problem and took it to the dealer. She said they reset something and it passed. They didnāt have it long enough to do a drive cycle. Sure looks like there is some sort of software issue. At least we donāt have to worry about it for another two years.
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