What does Bank 1 mean in fuel trim?
Bank 1 refers to the bank of cylinders that contains cylinder #1. Fuel trim is the action taken by the PCM to adjust, or maintain the correct air/fuel mixture during normal engine operation.
What does it mean to have fuel trim malfunction?
This means the PCM (powertrain control module, also known as ECM or engine control module) has detected a fuel trim outside the specified range set by the vehicle’s manufacturer. If is usually detected when the fuel injection system doesn’t operate properly or if there’s an incorrect level of mixture ratio being compensated.
What is the OBD code for fuel trim?
Code P0170. Hi, thanks for writing in. The OBD-II Error Code P-0170 indicates that the powertrain control module is detecting a fuel trim that is outside the range of specification set by the vehicle’s manufacturer.
What does the p0170 code on a fuel trim mean?
What the P0170 code means. The P0170 code means that the powertrain control module is detecting a fuel trim that is outside the range of specification set by the vehicle’s manufacturer.
What is the diagnostic code for fuel trim malfunction?
Cost of diagnosing the P0170 code. P0170 is a diagnostic trouble code (DTC) for “Fuel Trim Malfunction (Bank 1)”.
What can cause a fuel trim to malfunction?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. P0170 Tech Notes Dirty air filter, air filter housing or Mass Air Flow (MAF) sensor, or faulty MAF sensor are common causes for the P0170 code.
What the P0170 code means. The P0170 code means that the powertrain control module is detecting a fuel trim that is outside the range of specification set by the vehicle’s manufacturer.
What does DTC stand for on fuel trim?
Diagnostic Trouble Code (DTC) P0170 stands for “Fuel Trim Malfunction (Bank 1).” Fuel trim is the adjustment made by the PCM to the engine’s air-fuel mixture. The P0170 code indicates that the fuel trims have reached an abnormally low or abnormally high value for a specified amount of time.