Definition of error code P and P – System too Rich (Bank 1 and Bank 2) . Read emissions expert information and diagnostics for fault code P and. Diagnostic Trouble Code (DTC) P Fuel Trim System Too RichDiagnostic Trouble Code (DTC) P Fuel Trim System Too Rich – United Kingdom | BBA. The fact that it’s throwing that code means that it’s trying and unable to adjust sufficiently to keep the air/fuel ratio correct. 2 is easy to check-.

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Get back on the road. Are You a Shop Owner? If you have a bank that is running too rich, which is unfortunately a very generalized condition, one or more of the following conditions must be true: The ECU uses a number of instruments, such as the mass air flow sensor MAFoxygen sensors, and manifold absolute pressure MAP to monitor the air-fuel ratio of the engine.

P DTC: System Too Rich

A technician may not inspect the coolant temperature sensor and cooling system. The Internet leads me to believe that your ignition might be coil on plug, in which case there o0172 no plug wires. It is important to complete the entire diagnostic process when diagnosing P To answer your question about what to buy, very few things in the automotive world are universal parts.

This, too, is not the root cause and should be cleared up when you solve the primary issue. If the fuel injectors are faulty, they could leak fuel into the cylinders rather than delivering the precise amount needed for the air-fuel ratio.

13C-DTC P System too Rich

Most routinely, the air-fuel ratio will be measured through p012 oxygen sensors calculating the amount of oxygen and carbon monoxide present in exhaust gases. There isn’t enough spark to burn the fuel completely. Valve cover and intake gaskets are all new. Sign up or log in Sign up using Google.


Features of the Circuit. The oxygen sensor is reading incorrectly, and everything is actually fine. I have codes po, and pop up. It is highly recommended to check the condition of the spark plugs and the operation of the coolant temperature sensor. Fuel Trim System Too Rich.

That was in relation to another issue, however it confused me enough to doubt whether buying a new oxygen sensor would in fact fix the problem! The following two failures need to be created.

DTC P0172: System too Rich

Generally a spark failure should be detected by the engine p072 and logged as a misfire, especially if it were bad enough to cause a rich condition, so this one seems less likely. There is a very effective “truth test” for any Mass Air Flow Sensor.

My Honda Civic EX threw the rich code and it turned out to be that my friend installed the timing belt off by 1 or 2 teeth.

The car may not be able to pass a state dct inspection because of the P code setting the Check Engine Light.

P0172 OBD-II Trouble Code: System Too Rich (Bank 1)

Guess we gotta find a new mechanic. What Causes Hoses to Leak?

Replaced all O2 sensors because of excessive buildup, crank sensor, timing belt with water pump, motor and transmision mounts, radiator leakthermostat, and plugs wires cap and rotor. I was told that the oxygen sensor, the cam sensor and the fuel cap could be the problem. High Quality Repairs Your auto repair done right, only the work you need with no add ons. When will DTC set? When this happens, the computer knows that there is an improper condition in the control of the Fuel System.

The first step in this program is to obtain When these adjustments become too large, code P is triggered. If the check engine light comes back on with code P continue the diagnostic process. If other codes are present, they must be addressed first. A Thermostat stuck p01722 the open position can mechanically cause a code P, especially in cold climates.


P can be caused by a lot of things. Always verify Fuel Pressure for any code P Recent Check Engine Light is on Inspection reviews. This is your fuel system. So what should be p00172 to the check list is the following items in terms of difficulty. On a Honda Pilot the MIL continuously throw codes p and p simultaneously never one at a time after reset roughly after 44 miles driven.

A proper air-fuel ratio of about Fast and easy Check Engine Light is on Inspection service at your home or office. Wow, sorry its so big! What exactly is happening when the code sets?

Get a quote and book an appointment online or speak to a service advisor at Dtcc on this large amount of air entering the engine, dct engine computer or PCM sprays more fuel into the combustion chambers. Theodore 13 years of experience. Since the oxygen sensors are telling the computer that less fuel is needed, this causes confusion in the computer because the Mass Air Flow Sensor is still saying there is too much air and the Oxygen Sensor is reporting that the mixture is still too rich.

Lucas 18 years of experience. If it’s an AFR sensor it may be too expensive to just swap out and try.

Be sure to verify proper Fuel Pressure under various driving conditions. A judicious calibration has already made the tuning but, since the regulation does not approve of such a move it is mandatory rtc forcibly generate some visible material malfunction like fuel pressure regulator, fuel injector, air leakage Here is a great video that clearly explains this process! I’m also assuming you don’t have a diesel engine.