Powertrain, generic · Fuel and air metering

P010A Mass or Volume Air Flow Sensor B Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

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.

Likely causes

Connector or wiring of sensor B open
Sensor B faulty internally (broken element)
Supply of sensor B missing (fuse, relay)
Control module input faulty

Symptoms

  • Check engine light on
  • Lack of power, hesitation (substitute value)
  • Rough idle
  • Start-stop may be disabled

Repair estimate

DifficultyEasyDIY possible
Parts and labour€20–350
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

mass air flow sensor bmass air flow sensor wiringsensor supply voltage

Related codes

P0100P010BP010CP010DP010EP010F

References: law.cornell.edu, fordservicecontent.com, saabwisonline.com.