What are the repairs that can fix the p0172 code?
What repairs can fix the P0172 code? 1 A repair of a vacuum leak 2 A replacement of a faulty fuel injector, fuel pump, or fuel regulator 3 Replacement of an excessively restricted air filter 4 Replacement of the thermostat or coolant temperature sensor 5 A replacement of the spark plugs 6 A cleaning of the oxygen sensors and mass air flow sensor
What does p0172 in OBD-2 stand for?
A proper air-fuel ratio of about 14.7:1 is vital to obtain maximum engine power and fuel economy. P0172 indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber.
What does it mean when your ECU says p0172?
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.
Is the p0172 fuel injection system too rich?
P0172 with P0175 or MAF DTCs – If you note both P0172 and P0175 or concurrent MAF-related DTCs, then you can likely rule out individual cylinder, ignition, and fuel injector problems. Instead, focus on the fuel injection system and the MAF.
What does the p0171 code in front oxygen sensor mean?
If the P0171 is combined with the P0174 code, it’s very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. If the problem persists the front oxygen (O2) sensor may need to be replaced.
What repairs can fix the P0172 code? 1 A repair of a vacuum leak 2 A replacement of a faulty fuel injector, fuel pump, or fuel regulator 3 Replacement of an excessively restricted air filter 4 Replacement of the thermostat or coolant temperature sensor 5 A replacement of the spark plugs 6 A cleaning of the oxygen sensors and mass air flow sensor
What to do if your Subaru has a p0171 code?
If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. If the problem persists the front oxygen (O2) sensor may need to be replaced. The cost to diagnose the P0171 SUBARU code is 1.0 hour of labor.
A proper air-fuel ratio of about 14.7:1 is vital to obtain maximum engine power and fuel economy. P0172 indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber.
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.
Is the mass airflow sensor a normal cause?
Saw where Mass Airflow sensor is normal cause. Changed the Sensor now I am getting P0172 & P0175 codes for air/fuel to rich and car is not idling very well and will cut off randomly. What is the next thing to check for these codes? Your engine went from bank #1, and bank #2 both being lean to both being rich after replacing the MAF sensor.