P0A42: The traction motor position sensor A gives a higher signal than normal
The traction motor position sensor A gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P0A42 |
|---|---|
| System | Engine and transmission |
| Group | P0Axx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0A42 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 P0A42 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
- P0A3E The generator inverter is getting too hot
- P0A3F The traction motor position sensor A has an electrical fault
- P0A40 The traction motor position sensor A gives readings outside the normal range
- P0A41 The traction motor position sensor A gives a lower signal than normal
- P0A43 The traction motor position sensor A fails now and then
- P0A44 The traction motor position sensor circuit A is turning faster than it should
- P0A45 The traction motor position sensor B has an electrical fault
- P0A46 The traction motor position sensor B gives readings outside the normal range
- P0A0F Engine failed to start
- P0A1F Battery energy control module fault
- P0A7F Hybrid battery pack deterioration
- P0A80 Replace hybrid battery pack
What does code P0A42 mean?
The traction motor position sensor A gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P0A42?
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, P0A42 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.
