Helpful Automotive Resources
P0170 Code: Fuel Trim (Bank 1)The stoichiometric mixture best suited for burning is 14.7 parts air to 1 part fuel. If the mixture contains excessive amounts of air, the PCM will add more fuel to balance out the lean mixture. Conversely, too much fuel leads to a rich mixture, and the computer compensates accordingly.
P2187 Code: System too Lean at Idle (Bank 1)The term “bank 1” only applies in vehicles with V-engine and flat layouts. It refers to the side where the number 1 cylinder is located. Note that there is only one bank if your car has a straight engine.
The term “bank 1” only applies in vehicles with V-engine and P0104 Code: Mass Air Flow (MAF) “A” Circuit Intermittent / ErraticDiagnostic trouble code (DTC) P0104 stands for “Mass Air Flow (MAF) “A” Circuit Intermittent/Erratic.” It may be logged once the PCM perceives that the MAF sensor frequency signal is not within the expected range based on the calculated MAF value.
P0104 is an engine trouble code related to a possible