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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
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