P22BB: The lambda sensor reference voltage (bank 2
The lambda sensor reference voltage (bank 2, sensor 2) has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
| Code | P22BB |
|---|---|
| System | Engine and transmission |
| Group | P22xx, NOx sensors, oxygen sensors and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P22BB with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P22BB with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P22B7 The lambda sensor pumping current trim (bank 1
- P22B8 The lambda sensor positive current control (bank 2
- P22B9 The lambda sensor positive current control (bank 2
- P22BA The lambda sensor positive current control (bank 2
- P22BC The lambda sensor reference voltage (bank 2
- P22BD The lambda sensor reference voltage (bank 2, sensor 2) is below normal
- P22BE The lambda sensor reference voltage (bank 2, sensor 2) is above normal
- P22BF The lambda sensor negative current control (bank 2
- P2200 NOx sensor circuit fault (bank 1)
- P2201 NOx sensor circuit range or performance problem (bank 1)
- P2227 Barometric pressure sensor A range or performance problem
- P2228 Barometric pressure sensor A circuit low
What does code P22BB mean?
The lambda sensor reference voltage (bank 2, sensor 2) has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
How do you clear P22BB?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P22BB comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
