Skip the auto shop - Our mechanics make house calls

P2193 OBD-II Trouble Code: System Too Lean at Higher Load Bank 2

Check Engine Light

P2193 code definition

System Too Lean at Higher Load Bank 2

What the P2193 code means

P2193 is an OBD-II generic code for the Engine Control Module (ECM) detecting the fuel control has reached its rich limits when the engine is under a heavy load on bank 2.

What causes the P2193 code?

  • The ECM controls the fuel using a closed loop feedback system. Therefore, the system is trying to enriched the fuel mixture and the O2 sensor keeps saying the system is too lean on bank one. If the system reaches 25% enrichment and the O2 sensor still indicates the system is lean, then the Check Engine Light is turned on and the code P2193 is set.

  • The fuel injection system on bank one is clogged causing the lean condition.

What are the symptoms of the P2193 code?

  • The Check Engine Light will be illuminated and the code is set in the ECM memory as a fault.

  • The engine will run lean on bank two and the engine may run rough and misfire.

  • The engine may hesitate on acceleration.

How does a mechanic diagnose the P2193 code?

  • Scan for codes and document the codes in the ECM and look at the freeze frame data for failure.

  • Monitor the O2 sensors for bank 2 while manually enriching the mixture with propane to see if the O2 sensor indicates rich.

  • Remove all spark plugs on bank 2 of the engine and check to see if any plug is running lean, indicating a problem cylinder.

  • Follow the manufacturer pinpoint tests for the diagnosis and replacement of the clogged or defective injector for the lean running cylinder.

Common mistakes when diagnosing the P2193 code?

  • Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired.

  • Failing to clear the ECM codes after the codes are fixed, so the ECM will enable the system to be normal again.

  • Failing to clean the injectors, if cleaning it would have fixed the problem.

How serious is the P2193 code?

Code P2193 is a code indicating that the engine is running lean on only one side. This lean condition can cause internal engine damage or cause the engine to misfire.

What repairs can fix the P2193 code?

Additional comments for consideration regarding the P2193 code

Code P2193 is for a lean running engine on bank two and the most common problem is the injectors getting clogged over time. As they clog over time, the engine will compensate by running the injectors richer to bring the system back to normal. Once the ECM has richened the fuel as much as it can, then it will set the code. Most fuel controls can go lean or rich up to 25% before the limit is reached.

Need help with a P2193 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: The Check Engine Light comes back on after I reset it

When the Check Engine Light comes on without any specific warning, this can indicate a variety of possible issues. Unfortunately, without more specific symptoms, this can be tough to diagnose without the use of a scanning tool and the skill...

Q: I got my a.c. serviced n alignment done after dat check light is blinking on the dashboard verna 2008

Hello, thank you for writing in. Without knowing what system's pressure is too high, or what the actual code was that set off the check engine light, it is almost impossible to give you direction on where to turn for...

Q: Problem with Check Engine light in my dashboard.

Hi and thanks for your question. The code P0139 means that the secondary oxygen sensor on bank 1 (the sensor after the catalytic converter) is not damaged, but rather the engine air fuel ratio is not being adjusted by the...