Powertrain, generic · Fuel and air metering

P010F Mass or Volume Air Flow Sensor A/B Correlation

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

Engines with two intake paths have two mass air flow sensors, A and B. On a symmetrical V engine both sides should draw about the same amount of air, so the readings can be compared with each other. P010F is set when both signals are electrically valid but differ by more than allowed; the code does not say which side is wrong. No manufacturer document using exactly this code or its threshold was found: GM's twin-turbo V6 and Nissan's VR30DDTT assess each sensor separately against a model (P0101/P010B). The description therefore rests on the CARB requirement for plausibility checks and on component sources for engines with two sensors. Typical causes are a leaking intake pipe or a soiled sensor on one side.

Likely causes

Air leak or loose intake pipe on one side
One of the two sensors contaminated or aged
Air filter on one side clogged or wrongly fitted
Turbocharger or boost problem on one bank
Contact resistance in connector or wiring

Symptoms

  • Check engine light on
  • Lack of power, uneven running
  • Mixture codes for one bank (P0171/P0174) possible

Repair estimate

DifficultyMediumDIY possible
Parts and labour€10–700
Time0.5–2.5 h

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

Parts involved

mass air flow sensormass air flow sensor bintake ductair filter

Related codes

P0101P010BP0171P0174P010A

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