Powertrain, generic · Fuel and air metering

P010C Mass or Volume Air Flow Sensor B Circuit Low

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. P010C means the signal of sensor B is below its electrical lower limit – the counterpart of P0102. GM's twin-turbo V6 sets it at 400 Hz or less (300 failed out of 375 samples, two trips); Ford's digital sensor B below 1.5 kHz for 5 s. The usual causes are an open or grounded signal wire, a corroded connector, missing supply or failed sensor electronics. The engine continues with a calculated substitute value.

Likely causes

Signal wire of sensor B open or grounded, connector corroded
Sensor B electronics failed
Supply or ground of sensor B faulty
Control module input faulty

Symptoms

  • Check engine light on
  • Lack of power, substitute value mode
  • Rough idle, hesitation

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

P0102P010AP010BP010DP010F

References: law.cornell.edu, gsi.ext.gm.com, fordservicecontent.com.