P010AMass or Volume Air Flow Sensor B Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Sensor B is a second mass air flow sensor in a second intake path, found on engines with two air filter boxes – for example the Nissan VR30DDTT twin-turbo V6 (where sensor B belongs to bank 2) or GM's 3.0 litre twin-turbo V6. P010A is the general circuit fault of sensor B: no usable signal at all, just like P0100 for sensor A. Ford's 2020–2023 petrol summary lists it for a broken element of digital sensor B, with the same limit as sensor A (period above 1.3 ms for half a second); which engines carry sensor B is not stated. GM's twin-turbo V6 only uses the other sensor B codes. The engine can run on values calculated from manifold pressure, throttle and the remaining sensor.
- What you may notice
- Check engine light on
- Lack of power, hesitation (substitute value)
- Rough idle
- Start-stop may be disabled
- Likely causes
- LikelyConnector or wiring of sensor B open
- LikelySensor B faulty internally (broken element)
- PossibleSupply of sensor B missing (fuse, relay)
- RareControl module input faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €20 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.