Fuel System Malfunction P0170, the Diagnostic Journey

16554 P0170 035 Fuel Trin, Bank 1 Malfunction Possible causes: Air leaks - Map, TB gaskets?? Lambada - Clean or Replace any other possibilities? Codes P0170 through P0175 are caused by either unmetered air entering the engine or excess fuel entering the combustion chamber, though it could ... My 97 lude is throwing P0172 that reads "System running rich" and P0170 reads"fuel trim malfuntion". What does those codes mean? How can i fix it? What's covered: a simple check for vacuum leaks, a simple remedy, how engines actually work, and fuel injection basics on an Ecotec engine ... Explore the P0170 OBD-II code for fuel trim issues: learn common triggers like vacuum leaks and MAF sensor faults, along with diagnostic tips at RepairPal. Got bored today decided to hook up GuzziDiag on the Tuono. Found one fault: P0170. P0615 P0170 Starting relay Short circuit to positive F. VW DTC P0170 - Fuel Trim, Bank1 Malfunction. That would be the ECU informing you that the air / fuel mixture coming out of your engine is off, way off. That code is set when the ecu needs to adapt long term fuel trims more than 25%+. You still have some kind of vacuum leak check the brake ... Googling gives me P0170 Fuel Trim Malfunction (Bank 1) - fuel trim malfunction. It does have a rough idle but has not stalled. I've gone through ... List of possible causes: - Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect ...