P0172 indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber. The ECU uses a number of instruments, such as the mass air flow sensor (MAF), oxygen sensors, and manifold absolute pressure (MAP) to monitor the air-fuel ratio of the engine.
What causes system Too Rich Bank 1?
The most common reasons include a faulty oxygen sensor or a dirty mass air flow sensor (MAF). In addition, here are some additional causes of throwing code PO172.
How serious is P0172 code?
What Does Code P0172 Mean? Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid damage to spark plugs, pistons, and catalytic converters.
What does system Too Rich Bank 1 and 2 mean?
P0172 is triggered by the engine bank 1 “upstream” oxygen sensor and P0175 is triggered by the engine bank 2 “upstream” oxygen sensor. The oxygen sensor alerts your system when the condition is too rich meaning there’s too much fuel int the exhaust stream or too little oxygen in the exhaust stream.
What causes fuel system too rich?
If the vehicle is not hoisted properly, the fuel return line can be pinched, causing a high Fuel Pressure condition. Always verify Fuel Pressure for any code P0172. Shorted Fuel Injector windings can cause the injectors to spray too much fuel, causing a rich condition.
How do I fix my car running rich?
If your engine is running rich, then you can fix it by trying the following remedies:
- Adjust gas cap.
- Check tire pressure.
- Change fuel filter.
- Check Car’s Air Duct Flap.
- Maintain well.
- Keep an eye on warning lights.
How do you diagnose P0172 code?
Zitat von Youtube: Use the zeus app to scan your vehicle. And see the error code p0172. Po172 means that the engine air fuel mixture is too rich which indicates that the bank one of your car has too much fuel or not