Bought a Jeep SRT8 that won't pass inspection because of "not ready" indicators from the PCM when hooked up at the inspection station.

The tests that are not complete are O2 sensor tests and catalyst tests. The PCM was checked and verified to be correct at the Dodge dealer on Monday. Will things like a Gibson exhaust and a cold air intake prevent those tests from completing? There is no check engine light on, but it has a new battery so the PCM has obviously been cleared.

I paid for it but the dealer can't complete the transfer until it's inspected. He's put over 700 miles on it since he got it, I figure if it's not complete, it's never going to be. What are the options at this point?

Sounds like something is either leaking or not hooked up right. Most cat back and CAI's are CARB legal and they have the toughest requirments in the country to get aftermarket approval. Tim

That's good to know. Some good friends that are up on the new stuff are saying just drive it, takes time. As a software engineer, it seems very odd to me that an ECU would need more than 800 miles to "reset".

i have never had one take over 100 mile's .
P.S everyday car no mod's.

OBD II MONITOR RUN PROCESS

The following procedure has been established to assist Chrysler Dealer Technicians in the field with enabling and running OBD II Monitors. The order listed in the following procedure is intended to allow the technician to effectively complete each monitor and to set the CARB Readiness Status in the least time possible.

NOTE:
Once the monitor run process has begun, do not turn off the ignition. By turning the ignition key off, monitor enabling conditions will be lost. NVLD Monitor runs after key off. By performing a Battery Disconnect, or Selecting Erase DTCs, the CARB Readiness and all additional OBD II information will be cleared.

Monitor Preliminary Checks:

1. Plug a scan tool into the vehicle's Data Link Connector (DLC).
2. Turn the ignition, KEY ON - ENGINE OFF. Watch for MIL lamp illumination during the bulb check. MIL lamp must have illuminated, if not, repair MIL lamp.
3. Using a scan tool check for Powertrain related DTCs.
- Verify that No Emissions Related DTCs are Present.
- * If an Emissions DTC is Present, the OBD II Monitors may not run and the CARB Readiness will not update.
- The Emissions related DTC, will need to be repaired, then cleared. By clearing DTCs, the OBD Monitors will need to be run and completed to set the CARB Readiness Status.

Using the scan tool check the CARB Readiness Status.

Do all the CARB Readiness Status Locations read YES?.

- *YES, then all monitors have been completed and this vehicle is ready to be I/M or Emission Tested.
- *NO, then the following procedure needs to be followed to run/complete all available monitors.

NOTE:
Only the monitors, which are not YES in the CARB Readiness Status, need to be completed. Specific criteria need to be met for each monitor. The most efficient order to run the monitors has been outlined below, including suggestions to aid the process.

Evaporative Emission System Leak Detection with Purge Monitor

This monitor requires a cool down cycle, usually an overnight soak for at least 8 hours without the engine running. The ambient temperature must decrease overnight - parking the vehicle outside is advised. To run this test the fuel level must be between 15-85% full. For the monitor run conditions select the EVAP MON PRE-TEST in the scan tool, OBD II Monitors Menu. The Purge monitor will run if the small leak test reports a pass. Criteria for EVAP monitor:

- Engine off time greater than @ one hour.
- Fuel Level between 15% and 85 %.
- Start Up ECT and IAT within 10° C (18° F).
- Vehicle started and run until Purge Monitor reports a result.

NOTE: If the vehicle does not report a result and the conditions where correct. It may take up to two weeks to fail the small leak monitor. DO NOT use this test to attempt to determine a fault. Use the appropriate service information procedure for finding a small leak. If there are no faults and the conditions are correct this test will run and report a pass. Note the Small leak test can find leaks less than 10 thousands of an inch. If a small leak is present it takes approximately one week of normal driving to report a failure.

Catalyst / O2 Monitor

With NGC, Catalyst and O2 Monitor information are acquired and processed at the same time. Most vehicles will need to be driven at highway speed (< 50 mph) for a few minutes. Some vehicles run the monitor at idle in drive. If the vehicle is equipped with a manual transmission, using 4th gear may assist in meeting the monitor running criteria. For the monitor run conditions, select the BANK 1 CAT MON PRE-TEST in the scan tool, OBD II Monitors Menu.

EGR Monitor

The EGR monitor now runs in a closed throttle decel or at idle on a warm vehicle. However, it is necessary to maintain the TPS, Map and RPM ranges to allow the monitor to complete itself. For the monitor run conditions, select the EGR PRE-TEST in the scan tool, OBD II Monitors Menu.

O2 Sensor Heater Monitor

This monitor is now continuously running once the heaters are energized. Pass information will be processed at power down. For the monitor run conditions, select the O2S HEATER MON PRE-TEST in the scan tool, OBD II Monitors Menu.

Mis-Fire Monitor

The NGC Misfire Monitor is a continuous two-trip monitor. The monitor uses two different tests/counters:

NOTE: The Adaptive Numerator must be learned before the PCM will run the Mis-Fire Monitor. The PCM updates the Adaptive Numerator at every key-ON, and is relearned after battery disconnect. The Misfire Monitor will not run until the Adaptive Numerator has updated since the last battery disconnect. If the Adaptive Numerator is equal to the default value then the PCM knows that the Adaptive Numerator has not been learned and does not permit the Misfire Monitor to run. If the Adaptive Numerator exceeds a calibrated percentage, the PCM sets a DTC for CKP NOT LEARNED and illuminates the MIL.

- 200 Revolution Counter - Looks for misfire that can cause immediate catalyst damage.
- 1000 Revolution Counter - Looks for misfire that can cause emissions to increase 1.5 times the Federal Test Procedure (FTP) standards. This test must also identify misfire percentages that might cause a "durability demonstration vehicle" to fail an Inspection and Maintenance Program tailpipe emissions test.

Might take a while, this info is for an 09, what year is yours? They change the criteria about every year, sometimes you got to let it warm up and cool down a certain number of times or cruise at a certain speed or minimum TPS or MAP reading. Tell me what year you are getting. You could set the cruise and drive 700 miles and never get them set without following the set parameters it is looking for.

Wow Dave, lot's of good info there. The two tests that have not run are O2 and Catalyst tests.

Quote:

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Catalyst / O2 Monitor

With NGC, Catalyst and O2 Monitor information are acquired and processed at the same time. Most vehicles will need to be driven at highway speed (< 50 mph) for a few minutes. Some vehicles run the monitor at idle in drive. If the vehicle is equipped with a manual transmission, using 4th gear may assist in meeting the monitor running criteria. For the monitor run conditions, select the BANK 1 CAT MON PRE-TEST in the scan tool, OBD II Monitors Menu.

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Seems like in 700+ miles this would have ran?

What year?

Only suggestion I have is for the cat efficiency test. The pcm will drive the fuel system purposely lean or rich to compare the upstream and downstream wave pattern of the O2 sensors to make sure they do NOT match. Usually this will occur after a specified time under a steady throttle position. You will not feel it but it will happen. I would suggest getting in a level highway (if available) and setting the cruise control. If accel or decel is called for (outside an allowable parameter) the test will not run. I also dont know if have a scanner plugged in alters this at all. I would (here) get on I-95 set the cruise and drive for 30 miles. Exit the highway, shut car off wait 30 seconds (a little excessive I know, but what i would do) restart car and return on the same road.
Good luck
Curt

2007 6.1 Jeep GC

Catalyst / O2 Monitor

With NGC, Catalyst and O2 Monitor information are acquired and processed at the same time. Most vehicles will need to be driven at highway speed (less then 50 mph) for a few minutes. Some vehicles run the monitor at idle in drive. If the vehicle is equipped with a manual transmission, using 4th gear may assist in meeting the monitor running criteria. For the monitor run conditions, select the BANK 1 CAT MON PRE-TEST in the scan tool, OBD II Monitors Menu.


This is about all I can come up with, if I had your car here I could plug it in and my scanner would tell me exactly how I need to drive it to get it set.

Thanks Dave, the plot thickens. Seems the Dodge dealer didn't actually plug into to it and check it on Monday. I dropped it off there tonight. They will take a closer look tomorrow. With all the little do-dads on it I'm fairly confident that somebodies fingers were in the PCM.

The thing scoots! I love it. I used his dealer plate to put some "drive cycles" on it today. Can't wait to get though all the BS. Like my older stuff

A lot of aftermarket tuners shut off things like the catalyst monitor and fuel monitors. If they are just shut off they won't report any codes, but now many states have caught on to it and check for OBD2 readiness, instead of just scanning for codes.

I would definitely have them check again to see if the PCM has the stock calibration on it. If not step 1 is to go back to stock.

Update... It was indeed flashed. The O2 sensor tests were disabled. They flashed it and all monitors set in a short 10-12 mile drive. I'm good to go, picking it up tomorrow

Outstanding....Enjoy!!
Curt