BMW fault codes
250 BMW OBD-II fault codes: what each one means, and how to track it down.
How to read a code
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 4
- AreaAuxiliary emission controls
- 20
- FaultThe specific fault in that area
Read the code
Note every stored and pending code your scanner shows, such as P0420.
Find it
Search by code or by words. For a manufacturer code (P1, B1, C1, U1) pick your make: its meaning differs by make.
Open the code
Its page explains the symptoms, likely causes, the checks to run and the fixes.
- P1136BMW · PowertrainO2 Sensor Heater Circuit High Voltage Bank 1 Sensor 1
- P1137BMW · PowertrainO2 Sensor Heater Circuit Signal Intermittent Bank 1 Sensor 2
- P1138BMW · PowertrainO2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 2
- P1139BMW · PowertrainO2 Sensor Heater Circuit High Voltage Bank 1 Sensor 2
- P1140BMW · PowertrainMass Or Volume Air Flow Circuit Range Performance Problem
- P1145BMW · PowertrainSolenoid Valve Running Losses Control Circuit Electrical
- P1151BMW · PowertrainO2 Sensor Heater Circuit Signal Intermittent Bank 2 Sensor 1
- P1152BMW · PowertrainO2 Sensor Heater Circuit Low Voltage Bank 2 Sensor 1
- P1153BMW · PowertrainO2 Sensor Heater Circuit High Voltage Bank 2 Sensor 1
- P1155BMW · PowertrainO2 Sensor Heater Circuit Intermittent Bank 2 Sensor 2
- P1156BMW · PowertrainO2 Sensor Heater Circuit Low Voltage Bank 2 Sensor 2
- P1157BMW · PowertrainO2 Sensor Heater Circuit High Voltage Bank 2 Sensor 2
- P1158BMW · PowertrainFuel Trim Adaptation Additive Bank 1 Low
- P1159BMW · PowertrainFuel Trim Adaptation Additive Bank 1 High
- P1160BMW · PowertrainFuel Trim Adaptation Additive Bank 2 Low
- P1161BMW · PowertrainFuel Trim Adaptation Additive Bank 2 High
- P1162BMW · PowertrainFuel Trim Adaptation Additive Per Ignition Bank 1 Low
- P1163BMW · PowertrainFuel Trim Adaptation Additive Per Ignition Bank 1 High
- P1164BMW · PowertrainFuel Trim Adaptation Additive Per Ignition Bank 2 Low
- P1165BMW · PowertrainFuel Trim Adaptation Additive Per Ignition Bank 2 High
- P1174BMW · PowertrainFuel Trim Adaptation Additive Bank 1 Malfunction
- P1175BMW · PowertrainFuel Trim Adaptation Additive Bank 2 Malfunction
- P1176BMW · PowertrainO2 Sensor Slow Response Bank 1
- P1177BMW · PowertrainO2 Sensor Slow Response Bank 2
- P1178BMW · PowertrainO2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 1 Sensor 1
- P1179BMW · PowertrainO2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 2 Sensor 1
- P1180BMW · PowertrainO2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 1 Sensor 2
- P1181BMW · PowertrainO2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 2 Sensor 2
- P1182BMW · PowertrainO2 Sensor Bank 1 Sensor 2 Open Circuit During Coast Down Fuel Cut-off
- P1183BMW · PowertrainO2 Sensor Bank 2 Sensor 2 Open Circuit During Coast Down Fuel Cut-off