P1390

Set by the manufacturer, so it means different things on different makes. 15 makes in the table below.

More codes than this one? Paste your whole scan

What P1390 means, by make 15 makes

Acura G-Sensor Intermittent Low Voltage
Chevrolet Wheel Speed Sensor 1 - G - Sensor Circuit
Chrysler Timing belt skipped one tooth or more
Citroen Octane Adjust Pin Out Of Self Test Range
Dodge Timing belt skipped one tooth or more
Ford Octane Adjust Pin Out Of Self Test Range
Isuzu G Sensor Circuit Intermittent Voltage Low
Jeep Timing belt skipped one tooth or more
Lincoln Octane Adjust Out of Self-Test Range
Mazda Octane Adjust Shorting Bar Out or Circuit Open
Mercedes-Benz Octane adjust shorting bar out or circuit open
Mercury Octane Adjust Out of Self-Test Range
Mitsubishi Timing belt skipped one tooth or more
Peugeot Octane Adjust Pin Out Of Self Test Range
Saab Random Misfire Detected. Catalyst Damaging. Fuel Level Low.

Each line is that manufacturer's own meaning for P1390. They are genuinely different faults, not rewordings of one, so a meaning listed against one make says nothing about the others. If your make is not listed, we do not hold it - your manufacturer's service information is the authority.

Code structure P1390

Powertrain

engine, transmission and emissions

Manufacturer-specific

Defined by the vehicle manufacturer, so the meaning varies between makes.

Fault index

identifies the specific fault

Powertrain Manufacturer-specific

Nearby codes in the P1 range

Manufacturer code meanings from kierandrewett/obd (b56a07a), used under the MIT licence. Copyright (c) Kieran Drewett. SpareRadar is not affiliated with the dataset's authors.