P2192 Fault Code

System Too Rich at Higher Load Bank 1

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

The P2192 fault code indicates a 'System Too Rich at Higher Load Bank 1' condition. This means that the engine control unit (ECU) has detected an excessive rich condition in the fuel mixture for bank 1 of the engine when it is under higher load. In this state, the air-fuel ratio has more fuel than air, which can lead to increased emissions and poor engine performance.

• The rich condition can lead to inefficient combustion, resulting in foul spark plugs and increased fuel consumption.
• This often requires immediate attention to avoid further damage to the engine or the catalytic converter.

What are the symptoms of the P2192 code?

The symptoms associated with a P2192 code typically include:

• Poor fuel economy due to a rich fuel mixture.
• Rough idling or stalling of the engine when stopped or during idle conditions.
• Engine hesitation or lack of power when accelerating under load.
• Black smoke or excessive fuel odor from the exhaust.
• Check Engine Light (CEL) illuminated on the dashboard, indicating a problem with the engine's performance.

What causes the P2192 code?

Several factors can cause the P2192 fault code, including:

• Faulty fuel injectors that are leaking or malfunctioning, leading to an excess fuel supply.
• A malfunctioning mass air flow (MAF) sensor that incorrectly reports the amount of air entering the engine.
• A clogged air filter restricting airflow, causing the mixture to be rich.
• Malfunctioning oxygen sensors that provide incorrect feedback to the ECU about the air-fuel mixture.
• Problems with the fuel pressure regulator that can lead to excessive fuel pressure.

How to fix P2192?

To resolve the P2192 fault code, you can follow these procedures:

• Start by inspecting the fuel injectors for leaks and replace any that are faulty.
• Clean or replace the air filter to ensure proper airflow entering the engine.
• Check the MAF sensor for cleanliness and functionality; replacement may be necessary if it's dirty or defective.
• Inspect and, if necessary, replace the oxygen sensors for accurate readings.
• Verify the fuel pressure and replace the fuel pressure regulator if it is defective. Clear the fault code and perform a test drive to see if the issue persists.