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DTC P0101 [MZR-CD (RF Turbo)]

id0102f1803100

DTC P0101 | Mass airflow (MAF) sensor range/performance malfunction
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DETECTION CONDITION | • The PCM monitors the input signal from the MAF sensor when the engine speed is between 600 rpm and 4,000 rpm. If the voltage characteristic of the MAF sensor signal is out of the threshold, the PCM determines that there is a malfunction in the MAF sensor. Diagnostic support note • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. • FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Intake air system malfunction • MAF sensor malfunction • Connector or terminal malfunction • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? • Connect the WDS or equivalent to the DLC-2. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Perform the Repair Verification Drive Mode. (See OBD DRIVE MODE [MZR-CD (RF Turbo)].) • Is the PENDING CODE for this DTC present? | Yes | Go to the next step.
No | Intermittent concern exists. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING". (See INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)].)
4 | INSPECT INTAKE AIR SYSTEM • Inspect intake air system for the air leak. • Is there any malfunction? | Yes | Repair or replace the intake air system, then go to Step 8.
No | Go to the next step.
5 | INSPECT MAF SENSOR CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the MAF sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 8.
No | Go to the next step.
6 | INSPECT MAF SENSOR • Inspect the MAF sensor. (See MASS AIRFLOW (MAF) SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace the MAF/IAT sensor, then go to Step 8. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
7 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to the next step.
No | Go to the next step.
8 | VERIFY TROUBLESHOOTING OF DTC P0101 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Perform the Repair Verification Drive Mode. (See OBD DRIVE MODE [MZR-CD (RF Turbo)].) • Is the PENDING CODE for this DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform the "AFTER REPAIR PROCEDURE". • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | DTC troubleshooting completed.