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OBDII/EOBD diagnostics trouble codes definition

If your car supports OBD II or EOBD, then you can already use almost 5000 generic OBDII codes. These codes are from PowerTrain series (P0XXX, P2XXX, P34XX), Body Series (B0XXX), Chassis series (C0XXX), Network series (U0XXX, U2XXX, U3XXX).

Also there is a list of more than 13500 additional manufacturer specific codes.

Supported manufacturers with specific OBD2 codes:


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Definition of check engine code P1138:

BMW:

O2 Sensor Heater Circuit Low Voltage (Bank 1 Sensor 2)

Chrysler/Dodge/Jeep:

O2 Sensor Heater 2/1 Element Resistance Out of Range

Citroen/Peugeot:

Lack Of HO2S12 Switch - Sensor Indicates Rich

Fiat:

Diesel pressure circuit

Ford:

Lack Of HO2S12 Switch - Sensor Indicates Rich

GM:

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Rich or High Voltage

Jaguar:

Lack Of HO2S12 Switches - Sensor Indicates Rich

Kia:

Lack Of HO2S12 Switches - Sensor Indicates Rich

Land Rover:

Oxygen Sensor Engine Rich *Codes* A D

Lincoln:

Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 1

Mazda:

HO2S Bank 1 Sensor 2 Signal Above 0.45v (A/F Ratio Too Rich)

Mercedes:

Lack Of HO2S12 Switches - Sensor Indicates Rich

Mercury:

Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 1

Nissan:

Swirl Control Valve

Oldsmobile:

Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 1

Porsche:

Oxygen Sensing

Saab:

Additive Adaptation Bank 2 Min Value Air/Fuel Mixture Too Rich

Saturn:

O2S System Monitor Rich Or High Voltage

Volkswagen/Audi:

Long Term Fuel Trim Add. Fuel,Bank2 System too Lean

Volvo:

Long Term Fuel Trim Add. Fuel,Bank2 System too Lean