Can a bad O2 sensor cause P0170?

Can a bad O2 sensor cause P0170?

If the O2 sensor says it needs more fuel, then the PCM will carry out a positive trim. 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.

What causes fuel trim problems?

Short-term fuel trim happens as a result of changes in the oxygen levels of exhaust gases. An oxygen sensor monitors the flow and generates a signal that is proportional to the oxygen levels in the gases. In a properly functioning system, the ECU will react and immediately make changes as the exhaust gases change.

What does short-term fuel trim mean?

The short-term fuel trim (STFT) refers to immediate changes in fuel occurring several times per second. So, for instance, if you start going up a hill and need more fuel, if a vacuum line comes off and creates a lean condition, or if there is any airflow/fueling change in the moment, the STFT is there to assist.

What does fault code P0170 mean?

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.

How do I fix code P0170?

What repairs can fix the P0170 code?

1. Correcting any condition that causes the engine to run rich.
2. Correcting any condition that causes the engine to run lean.
3. Replacing the powertrain control module.

What does P0170 code mean?

How do I reset my short term fuel trim?

This is done by disconnecting the battery, waiting for 10 minutes or so, and/or turning the ignition key to the starter position to discharge the system.

What does the code P0170 mean?

What is system Too Rich Bank 1?

What Does System Too Rich Bank 1 mean? System too rich bank 1 means that the oxygen sensor in bank 1 identified a rich situation (presence of inadequate amount of oxygen in the exhaust). The engine control unit constantly monitors and communicates with different sensors of the fuel injection system / fuel trim .