2002 Chrysler Concorde Code P 0153 O2 sensor problem

James_007 · Posted at Wed Sep 30, 2009 9:19 am

Electrical problem
2002 Chrysler Concorde 6 cyl Front Wheel Drive Automatic 134K miles

Hi All,

I've been gathering information about the situation with my Concorde Limited 2002, the internet is a great place. I have little experience with auto mechanical issues but I believe I can replace the O2 sensor myself, there are some online tutorials on utube showing the basic way to do this. My question is, my code displays a "P0153 – 2/1 O2 Sensor Slow Response", this sensor is upstream from the catalytic converter right? I believe there are two O2 sensors upstream and 2 O2 senors downstream, should I replace both that are upstream or just the one on the drivers side?

Any help would be greatly appreciated:)

James

Jacobandnickolas · Posted at Thu Oct 01, 2009 5:00 am

To the best of my knowledge, that means bank 2 sensor 1. If you are on the passanger side of the vehicle looking at the engine, bank 2 should be the one on the left.

James_007 · Posted at Mon Oct 05, 2009 9:32 am

Thanks for your response:)

Just another quick question. If my mileage is not being effected (getting roughly 21 mpg in the city), should I be concerned about the O2 sensor issue. Just wanting to learn more about it, and pick up a hanes manual, so that when I try to change it myself I'm more prepared. I've read in other places if the mileage is not being effected then it is not much of a problem.

Thanks again.

James

Jacobandnickolas · Posted at Mon Oct 05, 2009 9:45 am

I agree. If the sensor is bad, it will have an adverse affect on the mileage. If it is still running well, chances are it is just starting to go bad. But, it could cause other items to go bad if not replaced. Therefore, I recommend doing it.

As far as a manual, the sensor just unbolts from the exhaust, unplug the wiring harness, and replace the new one. I recommend using anti seize on the threads so you will be able to remove it in the future if it goes bad again. If you don't, it will rust / corrode and will be nearly impossible to remove.

James_007 · Posted at Sun Oct 25, 2009 12:08 pm

Just a follow up and a question. I'm starting to notice a MPG deficiency. My car has a trip computer, and I usually keep it on instant MPG setting. When I accerlate it goes down to 5 or 6 instant MPG useage, but I am not pushing it when I accerlate, never going above 2000 rpm, once I get to cruising speed and it kicks into overdrive it lists a instant MPG of 27 to 33 which seems normal to me. Most of my driving time is at the cruising stage, unless I go thru a route with allot of stop light or heavy traffic (these routes I try to avoid). The thing is it is still listing my avergae MPG as 18.5, just below the stated MPG for the 2002 Concorde Limited. I've inflated my tire pressure to 50 psi, I roll to stop lights or down hills by putting car into neutral, trying everything to conserve fuel, still getting below average MPG than what I should be. Must be the O2 sensor right?

I priced it at a shop here for only $155 Canadian to get it fixed, just concerned that they won't fix it right the first time. Interesting thing, before I bought this car, I did a car fax and it listed a O2 sensor replacement back in 04', just doesn't list which one/s.

Thanks:)

James

P.S. How accurate is the trip computer regarding MPG readings and miles till empty readings.

Jacobandnickolas · Posted at Sun Oct 25, 2009 7:26 pm

The O2 sensor can cause the drop in mileage. As far as the cost of replacement, you could replace it yourself. It's just a matter of unpluging a connector, unscrewing the sensor and replacing it with the new one and plugging it back in.

As far as the tire pressure you are using. Check the sidewall of the tire. Max pressure for passanger tires usually doesn't exceed 44PSI. You could have a blow out and the center of the tires will wear out faster than the outside. Check that to make sure you haven't exceeded the recommended max pressure.

As far as the computer and MPG, they are accurate. However, if the float gauge in the fuel tank goes bad, the miles till empty could be wrong.

Overall, it is very common for O2 sensors to go bad, and yes they will cause poor fuel economy. If you know which one is bad, you could most likely save yourself about 60 or 70 dollars doing it yourself, but that is up to you.

Let me know if you have other qusetions.

Joe

James_007 · Posted at Tue Nov 03, 2009 5:20 pm

Jacobandnickolas · Posted at Tue Nov 03, 2009 8:12 pm

James:
I doubt the O2 sensor has anything to do with the new misfire; however, I would return to the place that did the work. They may have moved things around causing a plug wire to short or something to come disconnected. As far as the new code, PO300, I believe that is a random misfire not specific to any particular cylender. WHen was the last tune up?

Joe
PS: It sounds like you have the same luck as I do.

James_007 · Posted at Tue Nov 03, 2009 8:44 pm

Jacobandnickolas · Posted at Wed Nov 04, 2009 6:09 am

Actually, it makes it harder to locate. When there is a specific cylender misfiring, a mechanic can go to that cylender and check it. If it is random, it could be any.