The P0170 code on a Ford F-250 means that the powertrain control module is detecting a fuel trim that is outside the range of specification set by the vehicles manufacturer. This can mean a negative fuel trim or a positive fuel trim has been detected.The causes of the P0170 code are any condition that causes the engine to run lean such as a weak fuel pump, a clogged fuel filter, or a faulty fuel pressure regulator. Any condition that causes the engine to run rich such as a mass airflow sensor, manifold absolute pressure sensor, or a faulty fuel pressure regulator. A faulty powertrain control module can be the cause as well.
Roger C.
April 10, 2020
Code p0170 on the ford f-250 means the powertrain control module is detecting a positive or negative fuel trim, which is outside the range indicated by ford itself.
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