P1391

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 P1391 means, by make 15 makes

Acura G-Sensor Performance
Audi Camshaft Pos. Sensor,Bank2 Short to Ground
Chevrolet Wheel Speed Sensor 1 - G - Sensor Circuit Performance
Chrysler Intermittent loss of CMP or CKP
Citroen Glow Plug Circuit Low Input (Bank #1)
Dodge Intermittent loss of CMP or CKP
Ford Glow Plug Circuit Low Input (Bank #1)
Isuzu G Sensor Performance
Jeep Intermittent loss of CMP or CKP
Lincoln Glow Plug Circuit Low Input (Bank #1)
Mercury Glow Plug Circuit Low Input (Bank #1)
Mitsubishi Intermittent loss of CMP or CKP sensor signals
Peugeot Glow Plug Circuit Low Input (Bank #1)
Volkswagen Camshaft Pos. Sensor,Bank2 Short to Ground
Volvo Camshaft Pos. Sensor,Bank2 Short to Ground

Each line is that manufacturer's own meaning for P1391. 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 P1391

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.