SOLVED: Fuel trim bank one & two condition. JThe ECM

Detail: Fuel trim bank one & two condition. The ECM has detected a rich or lean air/fuel ratio contition on engine bank two. The powertrain cofntrol module uses the oxygen indicator to calculate the air/fuel ratio of the - the computer has recognized a rich or lean condition on one engine bank.
Detail Question SOLVED: Fuel trim bank one & two condition. JThe ECM

Solution: Usually it's an air leak in the intake and /or exhaust that throws fuel trim off.Bad/dirty injectors are the 2nd common cause. , Hi, a 6ya Mechanic can help you resolve that issue over the phone in a minute or two. Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck! , Unclip the 02 harness, then take out the 02 sensor. 5 minute job. , you need to change the oxygen sensor. it will soon cause you problems. after you need to take it in to  erase the code. , You has a vacuum leak on the engine. In order to troubleshoot this, you must start with a clean engine wipe down. The major offender parts are air intake gasket on the manifold air tube after the mass air flow sensor rubber seal under idle air control IAC motor === Warm up the engine for 15-20 minutes (LEAVE THE engine at idle) then spray a little Barmen carburetor clear on the potential air leak location (ONE AT A TIME) and listen for a surge in rpm. If the engine speed go higher that's mean the carburetor clean (ADDITIONAL FUEL) got into your engine and that's the gasket you need to change. There may be multiple leaky spots so take your time and check all rubber gaskets,sensor and hose that are lead into the intake manifold. When you finish fill up with one tank of Chervon to clean out the injectors. Please post more information after your inspection. , Yes and no. The climate change may have reviled a problem you didn't know was there. I'd say the intake gaskets are bad and are sucking air. And now that you are in colder weater the gaskets shrink and **** air. That or you have a weak fuel pump. But I'd have it checked for vaccume leaks (the intake gaskets), first. , A lean code can be caused by several different things. The most common, if you are getting a lean code on BOTH banks, is a dirty Mass Airflow Sensor (MAF) Cleaning the MAF usually fixes it. If not, it could be caused by anything from a crack in a vacuum line to a bad fuel pump. (Anything that could make the engine run lean.)

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