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OBDII/EOBD diagnostics trouble codes definition

If your car is equipped with OBD-II or EOBD, you can access over 5,000 generic OBD-II diagnostic trouble codes (DTCs). These codes cover various vehicle systems, including Powertrain (P0XXX, P2XXX, P34XX), Body (B0XXX), Chassis (C0XXX), and Network/Communication (U0XXX, U2XXX, U3XXX). Additionally, there are more than 13,500 manufacturer-specific OBD-II codes available for diagnosing issues unique to different car brands and models. Make sure you're equipped with the right tools to understand and resolve these trouble codes to keep your vehicle running smoothly.

By using these OBD-II codes, you can effectively diagnose issues related to engine performance, safety features, suspension, and more.

Enter code:

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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