Top 5 Reasons Why You Are Getting A P0172 And P0175 Code
Top 5 reasons why you’re getting a P0172 and P0175
A P0172 and P0175 is an indication of a very rich fuel mixture. More fuel is mixed with air. This will cause a reduce engine power, foul spark plugs, and incomplete burning resulting black smoke at engine exhaust . The rich condition will cause a negative fuel trim in the short term fuel trim and long term fuel trim. Now here are the top 5 reasons why you’re getting a P0172 and P0175.
Number one. Mass air flow. A dirty or faulty mass air flow can report that more air is entering the engine than it is. The computer will increase fuel therefore giving more fuel than it needs. This will trigger a check engine code. Make sure the mass air flow is not dirty and use a CRC mass air flow cleaner.
Number two. Defective coolant temperature sensor. A defective or improperly functioning coolant temperature sensor can cause the engine to run richer. This is due to the coolant temperature sensor reporting a lower temperature reading therefore the computer compensate by increasing more fuel.
Number three . Faulty fuel pressure regulator. A faulty fuel pressure regulator will cause a rich condition and fuel pressure will be higher than usual.
Number four. Stuck open fuel injector. A stuck open fuel injector will spray more fuel into the combustion chamber than it should.
Number five. Stuck open thermostat. A stuck open thermostat can prevent the vehicle going into closed loop.
In addition, a faulty oxygen sensor will also prevent the vehicle from going into closed loop.
Moreover, some of the symptoms are a sign of a possible that the vehicle is running rich.
Burning oil, rough idle, running rich after replacing cam, black smoke, misfire and so on.
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Top 5 Reasons Why You Are Getting A P0172 And P0175 Code, Dodge Caliber Thermostat in, Rockwall 75087 TX.
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