SpareRadar OBD-II Code Lookup

P1138

Set by the manufacturer, so it means different things on different makes. 23 makes in the table below.

More codes than this one? Paste your whole scan
What P1138 means, by make 23 makes
  • Audi Long Term Fuel Trim Add. Fuel,Bank2 System too Lean
  • BMW O2 Sensor Heater Circuit Low Voltage (Bank 1 Sensor 2)
  • Chevrolet Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Rich or High Voltage
  • Chrysler O2 Sensor Heater 2/1 Element Resistance Out of Range
  • Citroen Lack Of HO2S12 Switch - Sensor Indicates Rich
  • Dodge O2 Sensor Heater 2/1 Element Resistance Out of Range
  • Fiat Diesel pressure circuit
  • Ford Lack Of HO2S12 Switch - Sensor Indicates Rich
  • Jaguar Lack Of HO2S12 Switches - Sensor Indicates Rich
  • Jeep O2 Sensor Heater 2/1 Element Resistance Out of Range
  • Kia Lack Of HO2S12 Switches - Sensor Indicates Rich
  • Land Rover Oxygen Sensor Engine Rich
  • 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-Benz Lack Of HO2S12 Switches - Sensor Indicates Rich
  • Mercury Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 1
  • Nissan Swirl Control Valve
  • Peugeot Lack Of HO2S12 Switch - Sensor Indicates Rich
  • Porsche Oxygen Sensing
  • Saab Additive Adaptation Bank 2 Min Value Air/Fuel Mixture Too Rich
  • Saturn O2S System Monitor Rich Or High Voltage
  • Volkswagen Long Term Fuel Trim Add. Fuel,Bank2 System too Lean
  • Volvo Long Term Fuel Trim Add. Fuel,Bank2 System too Lean

Each line is that manufacturer's own meaning for P1138. 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 P1138
P
Powertrain
engine, transmission and emissions
1
Manufacturer-specific
Defined by the vehicle manufacturer, so the meaning varies between makes.
1
3
8
Fault index
identifies the specific fault
Powertrain Manufacturer-specific
Nearby codes in the P1 range
P1134 manufacturer-specific, 17 makes P1135 manufacturer-specific, 20 makes P1136 manufacturer-specific, 20 makes P1137 manufacturer-specific, 23 makes P1139 manufacturer-specific, 17 makes P113C manufacturer-specific, 1 make P1140 manufacturer-specific, 17 makes P1141 manufacturer-specific, 15 makes

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.