P2A81: The alternative fuel pump A compression travel valve control gives a lower
The alternative fuel pump A compression travel valve control gives a lower signal than normal. It is usually the part, its wiring or a connector with poor contact.
| Code | P2A81 |
|---|---|
| System | Engine and transmission |
| Group | P2Axx, Engine and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P2A81 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 P2A81 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
- P2A7D The alternative fuel hydraulic pressure sensor gives a higher signal than normal
- P2A7E The alternative fuel hydraulic pressure sensor fails now and then
- P2A7F The alternative fuel pump A compression travel valve control has a broken or
- P2A80 The alternative fuel pump A compression travel valve control gives readings
- P2A82 The alternative fuel pump A compression travel valve control gives a higher
- P2A83 The alternative fuel pump B compression travel valve control has a broken or
- P2A84 The alternative fuel pump B compression travel valve control gives readings
- P2A85 The alternative fuel pump B compression travel valve control gives a lower
- P2A00 O2 sensor circuit range/performance (bank 1, sensor 1)
What does code P2A81 mean?
The alternative fuel pump A compression travel valve control gives a lower signal than normal. It is usually the part, its wiring or a connector with poor contact.
How do you clear P2A81?
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, P2A81 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.
