2023年2月12日 · The P0174 code means that the O2 sensor on bank 2 has recognized a too lean mixture, and the imbalance is too great for the O2 sensor to correct the issue on its own. The O2 sensor can correct a fuel mixture of +-15%.

The P0174 code indicates that the fuel trim system on bank 2 of the engine is detecting a lean condition. This means that there is an imbalance in the air-fuel mixture being delivered to the engine, with too much air or too little fuel.

Learn what a P0174 code means, the most common causes of the codes and how to diagnose the system to locate the cause.

The P0174 trouble code stands for “System Too Lean (Bank 2).” What does P0174 Code Mean? The P0174 code indicates that your powertrain control module (PCM) detects a lean running condition .

P0171 or P0174 readings indicate too lean of a system in one of your cylinder banks. Learn common causes and solutions to these trouble codes.

2023年7月23日 · If the P0174 is combined with the P0171 code, the problem is likely caused by an intake leak or the Intake Plenum Gasket and seals. If there are no intake leaks, the next step is to replace the air filter and clean the airflow meter.

2024年8月27日 · Code P0174 means the engine’s Bank 2 is running too lean, with too much air or insufficient fuel in the air-fuel mixture. Several issues can trigger a P0174 code, including vacuum leaks, faulty mass airflow sensors, clogged fuel injectors, problematic oxygen sensors, or fuel pressure regulator issues. Can I drive with a P0174 code?

2024年10月17日 · A P0174 code is triggered when the engine control module (ECM) detects a lean condition on bank 2. This means there’s an imbalance in the air-fuel mixture, leading to insufficient fuel delivery. One common cause is a vacuum leak.

Basically this P0174 code means that the upstream oxygen sensor in bank 2 reporting a lean condition (too much oxygen in the exhaust). On V6/V8/V10/V12 engines, Bank 2 is the side of the engine that doesn't have cylinder #1.

2022年8月21日 · The P0174 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0174 is set in along with the P0171 code, it is highly likely that the problem is caused by an intake leak.