What to do when check engine light comes back on?
What to do when check engine light comes back on?
If the check engine light comes back on with code P0172 continue the diagnostic process. If check engine light code P0172 persists after you have inspected the air intake system and cleaned the Mass Air Flow (MAF) Sensor, perform a fuel pressure test. If any components in the fuel system are failing, replace them as necessary.
How can I tell if my fuel system is too rich?
When this thing happens, the computer knows there’s a bad condition in the control of fuel system or the oxygen sensor. To diagnose both P0172 and P0175, you need to check the scanner and look for the minimum of three ranges of the long term fuel trim. Also, check the idle reading – 3000 RPM unloaded and 3000 RPM with at least 50% load.
What are the symptoms of engine running rich?
7 Symptoms of an Engine Running Rich 1 Check engine light. When the fuel to air ratio is high, you will have the check engine light coming on. 2 Fuel smell from exhaust. 3 Constantly refilling your gas tank. 4 Poor engine performance. 5 Black smoke from exhaust. 6 High carbon monoxide content. 7 Sooty spark plugs. …
What to do if check engine light code p0172 persists?
If check engine light code P0172 persists after you have inspected the air intake system and cleaned the Mass Air Flow (MAF) Sensor, perform a fuel pressure test. If any components in the fuel system are failing, replace them as necessary.
If the check engine light comes back on with code P0172 continue the diagnostic process. If check engine light code P0172 persists after you have inspected the air intake system and cleaned the Mass Air Flow (MAF) Sensor, perform a fuel pressure test. If any components in the fuel system are failing, replace them as necessary.
Why is my Check Engine light too rich?
The car may not be able to pass a state vehicle inspection because of the P0172 code setting the Check Engine Light. If the the air-fuel ratio is rich enough, a black smog will come out of the exhaust, which is harmful to the environment. What repairs can fix the P0172 code?
When this thing happens, the computer knows there’s a bad condition in the control of fuel system or the oxygen sensor. To diagnose both P0172 and P0175, you need to check the scanner and look for the minimum of three ranges of the long term fuel trim. Also, check the idle reading – 3000 RPM unloaded and 3000 RPM with at least 50% load.
7 Symptoms of an Engine Running Rich 1 Check engine light. When the fuel to air ratio is high, you will have the check engine light coming on. 2 Fuel smell from exhaust. 3 Constantly refilling your gas tank. 4 Poor engine performance. 5 Black smoke from exhaust. 6 High carbon monoxide content. 7 Sooty spark plugs.
