P1143

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 P1143 means, by make 15 makes

Audi Load detection limit exceeded 448F 17551
BMW HO2S 2 Bank 1 Signal Too High
Chevrolet Heated Oxygen Sensor (HO2S) Bank 1 Sensor 3 Lean System or Low Voltage
Citroen Air Assist Control Valve Range/Performance
Ford Air-Assisted Injector Control Valve Range or Performance
Jaguar Air Assisted Injector Control Valve Range/Performance
Kia Air Assisted Injector Control Valve Range/Performance
MINI Heated oxygen sensor (H02S) 2, bank 1 - signal too high
Mazda HO2S Bank 1 Sensor 3 Signal Below 0.45v (A/F Ratio Too Lean)
Mercedes-Benz Lack Of HO2S Switches,H02S13 Indicates Lean
Nissan Heated O2 Sensor 1
Peugeot Air Assist Control Valve Range/Performance
Subaru Pressure Sensor Circuit High Input
Volkswagen Load detection limit exceeded 448F 17551
Volvo Load Calculation Cross Check Upper Limit Exceeded

Each line is that manufacturer's own meaning for P1143. 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 P1143

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.