What Does P2193 Mean?
The PCM detects an excessively lean air/fuel mixture on Bank 2 cylinders during higher engine load conditions. The oxygen sensors indicate insufficient fuel delivery or excess unmetered air when power demand increases.
Common Causes
30%
Weak fuel pump or restricted fuel filter unable to supply adequate fuel under load
25%
Vacuum leaks on Bank 2 intake manifold or related components
20%
Clogged or restricted fuel injectors on Bank 2 cylinders
15%
Exhaust leaks before oxygen sensors creating false lean readings
10%
Faulty MAF sensor under-reporting actual airflow at higher loads
Diagnostic Steps
1
Step 1: Monitor fuel pressure during loaded conditions and verify it maintains specifications
2
Step 2: Check fuel trim data on Bank 2 under load (expect high positive STFT and LTFT values)
3
Step 3: Perform smoke test on intake system to locate vacuum leaks, paying special attention to Bank 2
4
Step 4: Inspect exhaust manifold and pre-cat exhaust for leaks on Bank 2 side
5
Step 5: Test fuel injector operation and flow rates specifically on Bank 2 cylinders
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The PCM detects an excessively lean air/fuel mixture on Bank 2 cylinders during higher engine load conditions. The oxygen sensors indicate insufficient fuel delivery or excess unmetered air when power demand increases.
The most common cause of P2193 (System Too Lean at Higher Load Bank 2) is: Weak fuel pump or restricted fuel filter unable to supply adequate fuel under load
Typical repair costs for P2193 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Moderate safety concern with reduced acceleration capability and potential engine damage from lean combustion. May cause engine hesitation or stumbling under load.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2193 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Delivery and Intake System
Difficulty
Type
Generic (SAE)
Recommended Tools
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