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EC-178 [QG (WITH EURO-OBD)] DTC P0102, P0103 MAF SENSOR DTC P0102, P0103 MAF SENSOR PFP:22680 Component Description EBS00QIN The mass air flow sensor is placed in the stream of intake air. It mea- CONSULT-II Reference Value in Data Monitor Mode EBS00QIO Specification data are reference values. On Board Diagnosis Logic EBS00QIP These self-diagnoses have the one trip detection logic. FAIL-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up. SEC266C MONITOR ITEM CONDITION SPECIFICATION MAS A/F SE-B1 ● Engine: After warming up ● Air conditioner switch: OFF ● Shift lever: ● No-load Idle Approx. 1.0 - 1.7V 2,500 rpm Approx. 1.5 - 2.1V CAL/LD VALUE ● Engine: After warming up ● Shift lever: ● Air conditioner switch: OFF ● No-load Idle 10% - 35% 2,500 rpm 10% - 35% MASS AIRFLOW ● Engine: After warming up ● Shift lever: ● Air conditioner switch: OFF ● No-load Idle 1.0 - 4.0 g·m/s 2,500 rpm 5.0 - 10.0 g·m/s DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0102 Mass air flow sensor circuit An excessively low voltage from the sensor ● Harness or connectors ● Intake air leaks ● Mass air flow sensor P0103 Mass air flow sensor circuit An excessively high voltage from the sensor ● Harness or connectors ● Mass air flow sensor Detected items Engine operating condition in fail-safe mode Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut. |