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Home >> Infiniti >> 2021 >> QX50 Essential, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (1 Of 5) >> DTC/Circuit Diagnosis >> DTC P0102, P0103: MAF Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0102

00

MAF SEN/CIRCUIT-B1

(Mass or volume air flow sensor "A" circuit low)

Diagnosis condition

Engine running at idle

Signal (terminal)

Mass air flow sensor signal

Threshold

An excessively low voltage from the sensor is sent to ECM

Diagnosis delay time

--

P0103

00

MAF SEN/CIRCUIT-B1

(Mass or volume air flow sensor "A" circuit high)

Diagnosis condition

  • Turn ignition switch ON
  • Engine running at idle

Signal (terminal)

Mass air flow sensor signal

Threshold

An excessively high voltage from the sensor is sent to ECM

Diagnosis delay time

--