P2193
System Too Lean at Higher Load Bank 2
Fuel & air metering
Generic OBD-II
Medium
What it means
P2193 means bank 2 is running too lean (too much air or too little fuel) specifically under higher engine load. It's a fuel-and-air metering problem, not a no-start. Common causes are unmetered air from an intake or vacuum leak, weak fuel delivery or pressure under load, or a dirty MAF sensor. Sustained lean running can lead to misfires, so address it promptly.
Medium
Can I keep driving? You can usually drive, but expect hesitation or stumbling under load; fix it soon, as a sustained lean mixture can cause misfires and heat damage.
Common symptoms
What you'll notice
- Check-engine light on
- Hesitation, stumble, or power loss under acceleration or load
- Possible misfire or pinging under load
- Rough running
Common causes
Most likely first
- Intake or vacuum air leak drawing in unmetered air, especially downstream of the MAFLikely
- Low fuel pressure or weak fuel delivery under loadCommon
- Dirty or failing MAF sensorCommon
- Clogged or weak fuel injectors on bank 2Less often
- Exhaust leak upstream of the O2 sensor skewing readingsLess often
- Faulty upstream O2 or air/fuel sensor on bank 2Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame and fuel-trim data, then check for intake and vacuum leaks first (a smoke test helps).
- Inspect the PCV hose and intake ducting for leaks.
- Clean or test the MAF sensor and replace the air filter.
- Check fuel pressure and volume under load, and test the injectors.
- Inspect for exhaust leaks near the O2 sensor and verify the sensor's response.
- Clear the code and retest.
FAQ
Quick answers
Is it safe to drive with P2193?+
Short trips are usually fine, but a lean mixture under load can cause misfires and, over time, overheating damage to the pistons or catalytic converter. Repair it promptly.
Can I just clear P2193?+
You can, but it returns once the ECM sees the lean condition again under load. Find the air leak or fuel-delivery cause first.
Related codes
Often seen with P2193
Read & clear P2193 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX