P2193 Fault Code

System Too Lean at Higher Load Bank 2

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2193 fault code indicates that the engine control module (ECM) has detected a lean air-fuel mixture issue specifically in Bank 2 under higher load conditions. This means that there is insufficient fuel in the mixture relative to the amount of air being drawn into the engine, which can lead to performance issues and increased emissions.

What are the symptoms of the P2193 code?

Common symptoms associated with the P2193 code include:

• Decreased engine performance and power.
• Poor fuel economy due to lean conditions.
• Engine stalling or misfiring, especially during acceleration.
• An illuminated check engine light on the dashboard.

What causes the P2193 code?

Several factors can cause a lean condition in Bank 2, including:

• Faulty fuel injectors that are clogged or not delivering adequate fuel.
• Vacuum leaks in the intake system that allow extra air into the engine.
• Malfunctioning mass air flow (MAF) sensor affecting air measurement.
• Weak fuel pump not providing sufficient fuel pressure.
• A defective oxygen sensor that falsely reports the air-fuel ratio to the ECM.

How to fix P2193?

To resolve the P2193 fault code, the following steps can be taken:

• Inspect and repair any vacuum leaks in the intake manifold and hoses.
• Test and possibly replace fuel injectors if they are not delivering the proper amount of fuel.
• Check the mass air flow (MAF) sensor for proper operation and clean or replace if necessary.
• Confirm that the fuel pump is supplying adequate pressure; replace it if it is weak.
• Replace any faulty oxygen sensors that may be signaling inaccurate readings to the ECM.