Powertrain, generic · Fuel and air metering

P010B Mass or Volume Air Flow Sensor B Circuit Range/Performance

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. P010B is the plausibility fault of sensor B: the signal is electrically valid but does not fit. GM checks it like sensor A against a model built from the other sensors (manifold pressure, boost, throttle, sensor A) and fails it above 20 g/s deviation, with two trips. For the VR30DDTT Nissan names a loose or leaking left-hand intake pipe as the main cause and warns against touching or dismantling the sensor. Other causes match P0101: a soiled element, a clogged filter on that side or a boost leak.

Likely causes

Intake pipe on the sensor B side leaking or not seated
Sensor B element contaminated (oil, dust)
Air filter on that side clogged or wrongly fitted
Boost leak on that bank, or sensor/connector problem

Symptoms

  • Check engine light on
  • Lack of power, hesitation
  • Rough idle
  • Bank 2 mixture codes (P0174) possible

Repair estimate

DifficultyEasyDIY possible
Parts and labour€10–400
Time0.3–2 h

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

Parts involved

mass air flow sensor bintake ductair filter

Related codes

P0101P010AP010CP010DP010FP0174

References: law.cornell.edu, gsi.ext.gm.com, static.nhtsa.gov.