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There is a TSB on that code for a ECM Reflash

NUMBER: 18-028-06
GROUP: Vehicle Performance
DATE: September 15, 2006

SUBJECT:Flash: MIL Activation For Downstream Fuel Trim - DTC's P2096 or P2098
OVERVIEW: This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with new software.
MODELS: 2005 (TJ) Wrangler
NOTE: This bulletin applies to vehicles equipped with a 4.0L engine (sales code
ERH).
SYMPTOM/CONDITION: The Malfunction Indicator Lamp (MIL) is illuminated and Diagnostic Trouble Codes (DTC's)
P2096 or P2098 are stored.
DIAGNOSIS: Using a Scan Tool (DRBIII®) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all engine systems are functioning as designed. If DTCs other than
P2096 or P2098 are present record them on the repair order and repair as necessary
before proceeding further with this bulletin, then perform the Repair Procedure.


Also might check and see if you have any exhaust leaks or anything wrong with your exhaust system in general
 

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Discussion Starter · #3 ·
May sound dumb but what's a tsb? Does this mean I need to take to a stealership to fix? I checked for exhaust leaks but there were no leaks.
 

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Technical Service Bulletin. Vehicle manufactuers publish them and distribute to dealers for information regarding common problems and fixes.
 

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How do you check the codes? My 2006 TJ X 4.0 engine light just came on at 36300..?
Nothing seems wrong...runs fine etc...want to check code...Help?
 

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How do you check the codes? My 2006 TJ X 4.0 engine light just came on at 36300..?
Nothing seems wrong...runs fine etc...want to check code...Help?
Turn your ignition switch on-off-on three times within five seconds and then leave it in the on position. Give it time for the diagnostics to run, after they have completed you will see any resulting DTCs (diagnostic trouble codes) in the odometer.
 

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Turn your ignition switch on-off-on three times within five seconds and then leave it in the on position. Give it time for the diagnostics to run, after they have completed you will see any resulting DTCs (diagnostic trouble codes) in the odometer.
Jerry you are the man...ok PO546 Evap system Small leak..any ideas as to trying to solve the issue? New gas cap? lol I hardly have had her out of the garage in the last month...??? WWJD? :banghead:
 

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That could definitely be a loose/leaky gas cap... though that code can also pop up if the engine is started with the gas cap off. Cracked fuel lines are also known to cause that type of code though there are other possibilities too. :)
 

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That could definitely be a loose/leaky gas cap... though that code can also pop up if the engine is started with the gas cap off. Cracked fuel lines are also known to cause that type of code though there are other possibilities too. :)
So I guess I should start there and pick up a Non Vented cap?
 

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Assuming you do not have a way to clear(erase) the DTC I recommend start by making sure the fuel cap is tight. Replacing the cap with one that is not designed to work with the evap system will only cause more issues than the one you are trying to solve. It surely could not hurt to replace the cap with a factory replacement part either. Small evap leaks are difficult to find if you do not have access to OBD diagnostic equipment.
 

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Check the rubber seal on the gas cap where it seals against the filler neck. Having 2 crack there I replaced the rubber with an O ring from a hardware store. I think it is 2" OD but remove the cracked one & take it for a match up. For me it was $0.88 & works great.

Clear codes by disconnecting the battery.
 

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Check the rubber seal on the gas cap where it seals against the filler neck. Having 2 crack there I replaced the rubber with an O ring from a hardware store. I think it is 2" OD but remove the cracked one & take it for a match up. For me it was $0.88 & works great.

Clear codes by disconnecting the battery.
Much thanks to all bits of advice...The ring on the cap looks well..in fact too well like as in may not be sealing with the filler tube...May replace it and discon the battery to see what happens. The maybe crawl under on my creeper and look around at hoses.
Guess it will only hurt around 10 bucks if not the cap...Thinking the previous owner may have used the wrong cap..but it's been finr for a year and now? hmmm
 

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A little cap will do ya...

Much thanks to all bits of advice...The ring on the cap looks well..in fact too well like as in may not be sealing with the filler tube...May replace it and discon the battery to see what happens. The maybe crawl under on my creeper and look around at hoses.
Guess it will only hurt around 10 bucks if not the cap...Thinking the previous owner may have used the wrong cap..but it's been finr for a year and now? hmmm
GLAD to report!! Changed the gas cap...made 3 short trips around town starting her up maybe 8 times and NO more Engine light...went out...Thanks all...:dance:
 

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my 05 X 4.0L threw the p2096 today around noon. auto zone read the code and said its something i need to take to the dealership to have reprogrammed. anyone know if the dealership charges for this? and if so, roughly how much?
 

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Found this:

Engine Error Code P2096
Post Catalyst Fuel Trim System Too Lean, Bank 1.

Seems like possible exhaust leak or someplace I read hi flow cats can POSSIBLY cause this. I would think hi flow cat would cause a P2098 (bank 2) as well though. Here are a couple links I found (Google) but no apparent solutions.

Engine Error Code P2096 - Dodge Challenger Forum: Challenger & SRT8 Forums

CEL with code P2096 ... system too lean bank 1 ?



Doesn’t sound like a dealer reprogramming issue since it is only one bank, more of a possible bad O2 sensor. (?)
 

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i asked the guy at auto zone about the o2 sensor. he said its not likely because the code would be p02..something. since mine is p20..something it cant be the o2 sensor. but then again, auto zone typically hires knowledgeable people, but not always. but whats strange is that the jeep is running better now with light CE light on than it has since i bought it 2 months ago.
 

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Rereading post #2 above I see that the reprogram TSB says P2096 OR P2098 so maybe a call to the dealer with the TSB # might answer your questions.
 
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