What does the p0170 code on fuel trim mean?

The P0170 code indicates that the fuel trims have reached an abnormally low or abnormally high value for a specified amount of time. 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.

What does a p0170 mean on a PCM?

When the fuel trims reach their rich correction limit, the PCM (Powertrain Control Module) sets a P0170, indicating a problem or malfunction in the fuel trims. It may also have a P0173 referring to the same malfunction but on bank two. Symptoms of a P0170 DTC may include:

What does Bank 1 fuel trim malfunction mean?

Error Code P0170: Fuel Trim Malfunction (Bank 1) Error Code P0170 is described as Fuel Trim Malfunction Bank 1. 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.

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 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 does the PCM error code p0170 mean?

Error Code P0170 is set when the PCM has detected an anomaly on fuel (fuel trim) that is outside the range of the vehicle’s specifications. This can be a negative or positive trim. This code means there’s a malfunction in the computer’s control of air to fuel ratio.

Cost of diagnosing the P0170 code. P0170 is a diagnostic trouble code (DTC) for “Fuel Trim Malfunction (Bank 1)”.

What does the p0170 code on fuel trim mean?