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P0174

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P0174 OBD-II Trouble Code: System Too Lean (Bank 2)
P0174 code definition System Too Lean (Bank 2) What the P0174 code means Code P0174 indicates that there is a lean condition detected by the Engine Control Module (ECM). A lean...

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Question
Codes showing: P0171, P0420, P0174
Hello. These diagnostic trouble codes are an indication that there could be a problem with the oxygen sensor or that there is a vacuum leak. It is possible that the vacuum leak is located in the intake manifold. These codes...
Question
RPMs erratic during idling, Check Engine Light on, P0174 code
Hello. The P0174 code deals with the truck running lean. That means that the PCM is restricting fuel to the injectors. This is usually caused by a vacuum leak in the engine. There could be a leaking intake gasket, or...
Question
Codes P0171 and P0174
Codes P0171 and P0174 pertain to the engine running lean on both bank one, and bank two, meaning that both sides, or the complete engine, is running lean. The lean condition could be one of several possible causes. The intake...
Question
What sensor affects bank 2?
Code PO302 refers to a misfire. P1153 refers to the O2 sensor not switching often enough. This sensor monitors how often a lean to rich condition or rich to lean condition is present. When there is inconsistency in this, the...
Question
Still getting error codes
The codes you have for your GMC Yukon, p0171 and p0174, are informing you that the engine is running lean. This means that there is unmetered air entering the engine after the mass airflow sensor and is disturbing the air/fuel...
Question
transmission (ax4n) is not going into overdrive
You will need to have the transmission tested to see if the transmission solenoid for the torque converter lock up solenoid is stuck or bad. The transmission fluid should also be checked to see if it is full of clutch...
Question
My 2000 ford expedition is showing 0171 and 0174 codes do you have a estimate to fix?
The codes P0171 and P0174 point to a lean condition picked up by the oxygen sensors in the vehicle's exhaust system. Since there is a warning from both banks, it may be safe to say that this is could be...
Question
Engine is running rough and P0401, P0171 and P0174 codes.
The first thing to check is to see if the EGR solenoid will release the vacuum when the electrical connector is disconnected. If it still doesn't release the vacuum then the solenoid should be replaced. The codes need to be...
Question
My truck is losing power on take off and throwing multiple codes
Hello. The codes listed are indicative of lean conditions on both banks A and B, as well as issues with the camshaft position sensor for circuit B. A lean condition at both banks can be caused by many things. A...
Question
Unable to go past 70-80 Km when going up a hill. Code P0174 with flashing engine light
Hello. A flashing Check Engine Light is an indicator that the computer has detected an issue that may potentially cause harm to the vehicle's emission system components. The code P0174 indicates a lean condition on bank 2 of the engine....
Question
loss of power when driving check engine light blinking at 30 mph just changed manifold intake have p0171 p0174codes
You are having problems with the fuel injection system poppet injectors not opening up or stuck open causing the misfire. You may have a bad fuel pressure regulator or you did not seal the fuel lines into the regulator good...
Question
Error code P0171 and P0174
The high positive long term fuel trim suggests a vacuum leak and/or inadequate fuel delivery. But there are other causes that have to be evaluated as well: bad oxygen sensor(s); dirty MAF sensor; stuck open EGR valve; weak fuel pump;...
Question
Need to know what to do with these codes generated
All the generated codes will need further inspection from a mechanic. The P0300, P0301, and P0305 are all misfires in the engine and could also cause some of the additional codes. You will need to have a diagnostics done and...
Question
I have codes P0151, P0171, and P0174. I have changed out my O2 sensor, but now I have all these codes
Hey there. The codes you have downloaded simply relate to malfunctions in the "engine management system." It appears codes were set for oxygen sensor voltage out-of-range, possible EGR (exhaust gas recirculation) problems such as a blockage, and a generic code...
Question
Too lean in bank 1 and bank 2
Hi and thanks for contacting YourMechanic. When the engine becomes too lean, then combustion chamber becomes very hot causing the head gasket to burn, valves begin to burn, and the rings being to seize up. Check the camshaft sensor and...
Question
I keep getting OBD-II codes P0171 and P0174
Since you have codes that both banks are lean then the problem will most likely be from air entering the intake manifold after the mass air sensor. The idle air control valve should not have any air leaks from the...
Question
My truck is giving codes P0171 & P0174
Hi there. If the engine is running lean, then there could be a plugged fuel filter or a faulty fuel pump with loss of pressure. If the pressure is dropping after 20 to 25 minutes, then there could be a...
Question
Check Engine Light with P0174 code
As you know, this code relates to a lean fuel condition which can be caused by many different things, some of which you have already addressed. The oxygen sensors, which are part of your emissions system, read exhaust gases to...

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