P2ABF: The intake air lambda sensor reference voltage (bank 1) has a broken or
The intake air lambda sensor reference voltage (bank 1) has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
| Code | P2ABF |
|---|---|
| System | Engine and transmission |
| Group | P2Axx, Engine and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P2ABF 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 P2ABF 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
- P2AB9 The wastegate position sensor A gives a higher signal than normal
- P2ABA The wastegate position sensor B has an electrical fault
- P2ABB The wastegate position sensor B gives a lower signal than normal
- P2ABC The wastegate position sensor B gives a higher signal than normal
- P2AC0 The intake air lambda sensor reference voltage (bank 1) gives readings outside
- P2AC1 The intake air lambda sensor reference voltage (bank 1) is below normal
- P2AC2 The intake air lambda sensor reference voltage (bank 1) is above normal
- P2AC3 The intake air lambda sensor reference voltage (bank 2) has a broken or
- P2A00 O2 sensor circuit range/performance (bank 1, sensor 1)
What does code P2ABF mean?
The intake air lambda sensor reference voltage (bank 1) has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
How do you clear P2ABF?
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, P2ABF 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.
