P1127

Set by the manufacturer, so it means different things on different makes. 18 makes in the table below.

More codes than this one? Paste your whole scan

What P1127 means, by make 18 makes

Audi Long Term Fuel Trim mult.,Bank1 System too Rich
Chevrolet Open Loop CO Adjust Circuit
Citroen Exhaust Not Warm, Downstream O2 Sensor
Ford Heated Oxygen Sensor Heater not on During KOER Test
Hyundai Long Term Fuel Trim Multiplier Too Rich
Jaguar Exhaust not warm enough, downstream oxygen sensors not tested
Lamborghini Long term fuel trim multiplicative air system low
Lexus ECTS Actuator Power Source Circuit Malfunction
Lincoln Exhaust Not Warm Enough - Downstream O2 Sensor Not Tested
Mazda HO2S Bank 1 Sensor 2 Heater Not On During Key On Engine Running Self Test
Mercedes-Benz H02S - 12 heater not ON during KOER self test
Mercury Exhaust Not Warm Enough - Downstream O2 Sensor Not Tested
Peugeot Exhaust Not Warm, Downstream O2 Sensor
Porsche Oxygen Sensing
Saab Multiplicative Adaptation, Bank 1 Min. Value
Toyota ETCS Actuator Power Source Circuit Malfunction
Volkswagen Long Term Fuel Trim mult.,Bank1 System too Rich
Volvo Long Term Fuel Trim mult.,Bank1 System too Rich

Each line is that manufacturer's own meaning for P1127. 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 P1127

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.