P1291

Set by the manufacturer, so it means different things on different makes. 10 makes in the table below.

More codes than this one? Paste your whole scan

What P1291 means, by make 10 makes

Audi Engine coolant temperature (ECT) sensor,ECM controlled cooling system - high input
Chrysler No Temp rise seen from intake heaters
Citroen Injector High Side Short To GND Or VBATT - Bank 1
Dodge No Temp rise seen from intake heaters
Ford Injector High Side Short To GND Or VBATT - Bank 1
Jeep No Temp rise seen from intake heaters
Lincoln Injector High Side Short To GND Or VBATT - Bank 1
Mercury Injector High Side Short To GND Or VBATT - Bank 1
Peugeot Injector High Side Short To GND Or VBATT - Bank 1
Volkswagen Engine coolant temperature (ECT) sensor,ECM controlled cooling system - high input

Each line is that manufacturer's own meaning for P1291. 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 P1291

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.