Unable to pass emissions

Don't say anything about the anomaly unless the test center brings it up. Most smog test centers just hook up to the machine without checking for monitor readiness. That way they can charge you for a failed test. The only reason I discovered my incomplete O2 sensor heater monitor was because the shop owner of my test center pre-checks with a handheld scan tool so he doesn't have to charge for failed tests due to monitor readiness issues.

Inputting your VIN into the state computer controlled emissions testing system should be all that is necessary to alert the system that your particular vehicle has an exemption for O2 sensor heater monitor readiness. You shouldn't need to say a thing. If there is a problem, then show the test jockey your printouts from the BAR manual.

Please report back on how that works out.
 
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Will do.
Its a long story, but I will make it brief if you care to read it:
My two local smog check guys...
One I've known for 10 years.
The other about 4 years. Both are great guys.
They both plug in the reader first, and don't charge for that. But, there is a language barrier. But I can usually understand their replies. It goes something like this: "It not ready. You go drive. Come back tomollow."
So I then usually drive to the other shop, and it passes.

Not this time.

But the guy I've known 10 years did tell me, "You must rewire, look online". That's how I found the TSB for the sensor heater. And actually why I signed up on this TJ forum. I'm not really a social media guy. Anyway...
The second shop has a bluetooth reader that wirelessly ties into the state computer. He ran the test, VIN and all, and it failed, but he is pass or don't pay. Win there.
Trying to explain the anamoly may be a challenge. So I will try showing it to them, if it comes to that. And post the results.
Thank you.
 
Update 3/8/19:

1. I ran the Chrysler drive cycle for the O2 Sensor Heater Monitor exactly as written in the document linked by @mrblaine in Post # 18, specifically: start with a cold engine, idle five minutes and remove key, wait 10 minutes before checking the O2 sensor heater readiness monitor. No joy.

2. I experimented with a modified Chrysler drive cycle for the O2 Sensor Heater Monitor by leaving the jeep in the garage for 48 hours to let the engine and all fluids stabilize at ambient temperature, chocking the wheels and then idling in Park for 5 minutes, idling in Drive for 5 minutes and idling in Neutral for 5 minutes (total 15 minutes of idling), then shutting off the engine, removing the key, and letting the jeep sit for 48 hours to thoroughly cool down before checking the readiness monitor. Still no joy.

3. Having concluded from multiple tries at the Chrysler drive cycle, several weeks and hundreds of miles of driving, that there is a design anomaly and the O2 Sensor Heater Monitor in 05-06 Wranglers will never show ready for emissions testing unless the work detailed in TSB # 25-005-13 is performed under Chrysler's extended emissions equipment warranty, I decided to see what would happen if my smog test guy hooked up my jeep to the California emissions testing system and ran the test even though my O2 Sensor Heater Monitor showed not ready - My jeep passed emissions testing instantly with no further muss or fuss.


Conclusions from my research, experimentation and personal experience:

The California Bureau of Automotive Repair is aware of a design anomaly in all 2005 and 2006 Jeep Wranglers that causes the O2 sensor, O2 sensor heater and Catalyst readiness monitors to show not ready for emissions testing even when they are. [California BAR Smog Test OBD Reference, 10/12/18, page 22]

Chrysler has issued TSB # 25-005-13 (rev. 9/12/13) which is a workaround for this design anomaly that consists of one or more jumper wires and a few splices in the vehicle Power Distribution Center (PDC).

Chrysler has confirmed an extended emissions warranty for 2005 and 2006 Wranglers with this OBD readiness monitor issue, without expiration date or mileage limitation, for the parts and labor in connection with TSB # 25-005-13.

TSB # 25-005-13 will need to be performed if there are issues with the O2 sensor or Catalyst readiness monitors before an '05 or '06 Wrangler can pass smog in California.

TSB # 25-005-13 does not need to be performed for emissions testing in California if the only issue is with the O2 sensor heater monitor.

Assuming that there are no other issues, 2005 and 2006 Jeep Wranglers showing the O2 sensor heater monitor as "incomplete" or not ready for emissions testing can and will pass smog because the check digits in the VIN automatically alert the California emissions testing system to the exemption for the O2 sensor heater monitor.



Since I am experiencing no issues with my O2 sensor and Catalyst readiness monitors, and am able to pass smog in California even though my O2 sensor heater monitor shows not ready, I have elected not to have TSB # 25-005-13 performed at this time. It doesn't matter to me that the check engine light won't flash multiple times each time I turn on the ignition to alert me that the readiness monitors work properly - I have an OBDII scan tool for that and would prefer not to resort to a wiring hack unless absolutely necessary.



And that concludes this chapter of "Unable to Pass Emissions." Thanks to @mrblaine, @L J and @TJDon for the valuable pieces of the puzzle that each of you posted.

But wait, this chapter may not be over. @OldButStillJeeping, did your jeep pass emissions at an English speaking smog test center with your incomplete O2 sensor heater readiness monitor?
 
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But wait, this chapter may not be over. @OldButStillJeeping, did your jeep pass emissions at an English speaking smog test center with your incomplete O2 sensor heater readiness monitor?

Lol. 😄 What a hassle. Nice write up. Glad it finally worked out for you. As it should for all, evidently. I be taking my TJ down tomorrow, or next Saturday to a shop mrblaine recommended.
 
Well, took my TJ down to the recommended smog shop. Great guy at the shop. Thank you mr.blaine!
Anyway, the 02 sensor heater monitor(s) dealio passed with "Ready" status. Yay.
But now its reading cat O2 sensor not ready.
So it failed.
I won't prolong this thread anymore with my drivvle as my heater sensor issue, though sporadic, is primarily a non issue with the state's 'pass' guidelines and the PDC rewire which I did.
 
My 2006 LJ had the cat not ready when I took it for a smog check. The battery had failed and I got a free replacement right before I took it for smog. I performed the Chrysler service bulletin (2005-2006) 25-001-07 wiring modification. After 3 separate trips of 100 miles (300 miles) it showed ready. The next day I checked it and all was ready. Drove it 5 miles to get it smog checked. They told me it wasn’t ready and that if I ran the defroster on the way there (which I did) that might have triggered it not being ready. Unbelievable!
 
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2006 Wrangler Unlimited Rubicon 4.0 63,000 miles
Drove 100 miles and all monitors ready but it set the check engine light and a P0431 code. Catalytic, O2 sensor or exhaust leak. Anyone familiar with this? Does the P0431 code set when the monitors become ready? I was only waiting for the cat sensor to be ready and then get it smogged. I already performed the 25-001-07 wiring modification. Is it common for the catalytic converter to fail at only 63,000 miles? Any recommendations besides move out of California?
 
That's pretty young for a cat, and for O2 sensors. Try snugging up the two exhaust pipe flanges just above the two mini-cats (four nuts). That's a common leak point.
 
Thanks to the last 2 horrible governors we have had here in Colorado, we now have CARB emissions rules here. Went to get my emissions check today and they wouldn’t even test it. No check engine light, no codes stored, nothing. I plugged in my OBD2 and on the emissions ready screeen I get this….



C7A6D8B8-08FE-4B2B-A369-5AD890432449.jpeg

What do I have going on here? Nothing has been reset, the battery has been plugged in for 2 years, and is regularly driven. I read that service bulletin and the first thing it said was if you turn the key on and the CEL flashes, you need to do it. Well my Jeep has done that ever since I got it. And I never had a problem at the emissions place. Should I do the wiring modification and hope for the best? Just want some thoughts before I go cutting
 
I think HRT is a misspelling of HTR as in Heater as in Oxygen Sensor Heater. No amount of driving or running specific drive cycles fixed mine, nor installing new sensors. I did the wiring change in TSB 25-001-07 (apparently the same as in TSB 25-005-13) and it fixed it immediately. One engine startup and shutdown and the CEL stopped flashing and the OBDII system reported all monitors complete.

And yes, Colorado just keeps getting worse and worse. We need to put guard shacks on all the highways at the west border to inform emigrants that they can stay a maximum of 14 days. :p
 
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Ok, I started to do that mod but I’m going out of town with the jeep tomorrow so I decided against it until I get back. Looks like once I get to the back of the PDM it’ll take 5 minutes
 
And yes, Colorado just keeps getting worse and worse. We need to put guard shacks on all the highways at the west border to inform emigrants that they can stay a maximum of 14 days.

Please inform them that New Mexico is a lovely place to live !, especially if they are used to Kali. :oops:
The more your know ...... ;)
 
Ok, I started to do that mod but I’m going out of town with the jeep tomorrow so I decided against it until I get back. Looks like once I get to the back of the PDM it’ll take 5 minutes

In theory, 5 minutes. In reality, it took me longer.

Wiping off two decades of dust so you can see the wire color. Following the wires a little way to be sure you're on the right one. Untangling them and pulling enough of each wire out of the tight bunch to cut it in the right place. Working in a confined space with little room for dikes and crimper. Using a sheet metal shield under the heat shrink tubing so you don't melt the entire bunch.

Better plan for 6 minutes. :)
 
And of course the guy at the emissions test place had facial tats and looks like he just got out of federal prison. He knew nothing. He said your vehicle is not ready to test. I said that’s because you guys changed the test this year, and there’s nothing wrong with my Jeep, just hook it up to the sniffer. He absolutely has no interest in trying to resolve the situation he told me to go drive it and come back. I just laughed, what is that supposed to do.

Fortunately I remembered reading this thread back when CO announced it was getting CARB, and I had a sneaking suspicion of what the issue was.

The thing that pisses me off the most is that there is nothing wrong, it WILL pass the test, and they won’t run it. Fu<king burocrats!!
 
And of course the guy at the emissions test place had facial tats and looks like he just got out of federal prison. He knew nothing. He said your vehicle is not ready to test. I said that’s because you guys changed the test this year, and there’s nothing wrong with my Jeep, just hook it up to the sniffer. He absolutely has no interest in trying to resolve the situation he told me to go drive it and come back. I just laughed, what is that supposed to do.

Fortunately I remembered reading this thread back when CO announced it was getting CARB, and I had a sneaking suspicion of what the issue was.

The thing that pisses me off the most is that there is nothing wrong, it WILL pass the test, and they won’t run it. Fu<king burocrats!!

Please give Jerrod a hug ! :rolleyes: