What the heck does a P2096 DTC mean on a 2004 Hyundai Accent?

That is a strange issue, and this is the only thing I can find.

https://www.hyundai-forums.com/threads/p2096-and-p2196-codes.670358/

https://www.google.com/search?q=Hyundai+Sonata+2.4+GDI+Codes+P2196+and+P2096

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Hi there:
DTC P2096 - Post Catalyst Fuel Trim System Too Lean (Bank 1)

Lean mixture code could be caused by a leakage in the rubber boot that is between the throttle body (similar to a carburetor) and the air cleaner housing. Following are all the tests to be done for a vehicle other than yours... HERE.

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Not a valid trouble code for 2003 Hyundai Accent but it is valid for 2004 Mazda RX-8. You don't replace ANYTHING until you find out why the mixture is too lean. This could be caused by at least 20 different things. If your shop doesn't know how to diagnose the root problem, find a shop that does. If you start throwing parts at this without diagnosing, you could easily drop $1,000 and still not fix the problem.

This is probably sensor or emissions related. You need to have the car scanned with diagnostic equipment in order to help pinpoint the cause of the problem. The vehicles computer will have retained a trouble code that can be picked up with a scanner.

Do not ignore it as this light is on for a reason. You can have a scan done at Autozone for free.

P0733 - Gear 3 Incorrect ratio
P0734 - Gear 4 Incorrect ratio
P1709 - Park or Neutral Position Switch out of Self-Test Range
Check out this TSB 03-40-016

Some 2000-2002 ACCENT vehicles may experience the following conditions: Diagnostic Trouble Code (DTC) P0722: No pulse generator-B signal Third-gear "Fail-Safe" condition
"Check Engine" light on

If the vehicle experiences the above symptoms: Inspect the pulse generator-B and replace if necessary.
Reprogram the TCM using the Hi-Scan Pro

VEHICLES AFFECTED: Model: 2000-2002 Accent vehicles with automatic transmissions
Affected vehicle production date range:
3 DR: Produced through October 11, 2002
4 DR: Produced through September 3, 2002

Affected vehicle identification number (VIN) range:
3 DR: Produced through KMHCF35C63U235415
4 DR: Produced through KMHCG45C03U412818

The problem is you will have to take it to the dealer to get the reprogram done.


P2096 - Fuel trim too lean. Usually means vacuum leak. Look for crushed, broken or melted off vacuum hoses near intake manifold. Or an obvious hissing noise at a normal idle. If so replace or repair clear codes your done. If not obvious take carb cleaner spray with nozzle attached car running & go over all vacuum hoses, intake manifold, EGR valve see if idle raises if so you found leak. Repair. Could also be bad oxygen sensor switching bad O2 sensor but rarely.


Hope this helps!

Fuel trim too lean. Usually means vacuum leak. Look for crushed,broken or melted off vacuum hoses near intake manifold. Or an obvious hissing noise at a normal idle. If so replace or repair clear codes your done. If not obvious take carb cleaner spray with nozzle attached car running & go over all vacuum hoses,intake manifold,egr valve see if idle raises if so you found leak. Repair. Could also be bad oxygen sensor switching bad o2 sensor but rarely.

Post catalyst fuel trim too lean. You can get this if youre running your vehicle on LPG fuel.

The code.... P2096.... Post Catalyst Fuel Trim System Too Lean, Bank 2... If this has been repaired you can turn off the light with a scanner tool.....

SOME SHOPS RECOMMEMEND THIS BUT THE CAR MAKER SAYS 60,000 MILES IS SOON ENOUGH, THEY JUST WANT TO MAKE MONEY, AH HECK SO DOES EVERYONE!.

P2096
Signal Delay Time for Oxygen Sensor Ageing Limit
Diagnosis conditions
• Oxygen sensing after TWC is active
• No secondary air
• No diagnosis of secondary air system
• EVAP canister not highly loaded
• No faults in memory
Possible fault cause
♦ Oxygen sensor