| DTC P0101 | Mass air flow (MAF) sensor range/performance problem |
|---|---|
|
DETECTION CONDITION
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• The PCM monitors the input voltage from the MAF sensor. If the voltages at PCM terminal 124 deviates from the threshold, the PCM determines that the there is a MAF sensor problem.
|
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POSSIBLE CAUSE
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• MAF sensor malfunction
• Air restriction or leakage at intake-air system
• PCM malfunction
|
Diagnostic procedure
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
|
1
|
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has the 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
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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 M-MDS to the DLC-2.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
|
Yes
|
Go to the next step.
|
|
No
|
Intermittent concern exists.
Perform the “INTERMITTENT CONCERNS TROUBLESHOOTING”.
|
||
|
4
|
INSPECT AIR RESTRICTION OR LEAKAGE AT INTAKE-AIR SYSTEM
• Inspect the intake-air system for air restriction or leakage.
• Is there any air restriction or leakage?
|
Yes
|
Repair or replace malfunctioning part, then go to Step 6.
|
|
No
|
Go to the next step.
|
||
|
5
|
INSPECT MAF SENSOR
• Inspect the MAF sensor.
• Is there any malfunction?
|
Yes
|
Replace the MAF/IAT sensor, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
6
|
VERIFY THAT DTC P0101 TROUBLESHOOTING IS COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
7
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
DTC troubleshooting completed.
|
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