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4. Do the CKP pattern clear/CKP pattern learn procedure See HOW TO TROUBLESHOOT THE
A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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5. Do the VTC TEST in the INSPECTION MENU with the HDS.
6. Monitor the OBD STATUS for DTC P0011 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P0011 VTC SYSTEM MALFUNCTION
Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?
PASSED : Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated, go to the
indicated DTC's troubleshooting.
FAILED : Go to step 1 and recheck.
NOT COMPLETED : Check the OBD STATUS again.
DTC P0101: MAF SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEM
Fig. 8: DTC Troubleshooting Flow Chart (P0101)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
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Before you troubleshoot, record all freeze data and any on-board
snapshot, and review the general troubleshooting information See HOW
TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE
FUEL AND EMISSIONS SYSTEMS .
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If DTC P0106, P2228, and/or P2229 are stored at the same time as DTC
P0101, troubleshoot those DTCs first, then recheck for DTC P0101.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P0101 MAF SENSOR CIRCUIT RANGE/PERFORMANCE
PROBLEM
1. Parts condition check:
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1. Check for poor connections or damage to these parts:
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PCV hose
Intake air duct
Air cleaner
Purge (PCS) line
Are the parts OK?
YES : Go to step 2.
NO : Repair or replace the damaged part(s), then do the repair verification .
2. Intake air duct visual check:
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1. Check for damage or looseness of the air duct in the air cleaner.
Is it OK?
YES : Go to step 3.
NO : Reconnect or replace the intake air duct in the air cleaner, then do the repair verification .
3. Air cleaner element visual check:
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1. Check for a dirty air cleaner element.
Is it dirty?
YES : REPLACE THE AIR CLEANER ELEMENT , then do the repair verification .
NO : Go to step 4.
4. MAF sensor signal check (without engine running):
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1. Turn the ignition switch to LOCK (0).
2. Turn the ignition switch to ON (II).
3. Check the parameter(s) below with the HDS.
Threshold Current conditions
Signal
Values Unit Values
Unit
MAF SENSOR About 0.2 g/s
Do the current condition(s) match the threshold?
YES : Go to step 5.
NO : REPLACE THE MAF SENSOR/IAT SENSOR , then do the repair verification .
5. MAF sensor signal check (with engine running):
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1. Start the engine.
2. Vary the engine speed between 2, 000 rpm and 3, 000 rpm.
3. Check the MAF SENSOR in the DATA LIST with the HDS.
Current conditions
Signal
Values
Unit
MAF SENSOR
Does the reading change?
YES : Go to step 6.
NO : REPLACE THE MAF SENSOR/IAT SENSOR , then do the repair verification .
6. MAF sensor check:
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1. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on,
then let it idle.
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2. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
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ENGINE SPEED
VEHICLE SPEED
MAP SENSOR
TP SENSOR
Current conditions
Signal
Values
Unit
ENGINE SPEED
VEHICLE SPEED
MAP SENSOR
TP SENSOR
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3. Monitor the OBD STATUS for DTC P0101 with the HDS.
DTC Description
OBD STATUS
P0101 MAF SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEM
Does the HDS indicate FAILED?
YES : REPLACE THE MAF SENSOR/IAT SENSOR , then do the repair verification .
NO : If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor
connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the HDS indicates NOT
COMPLETED, go to step 2 and recheck.
REPAIR VERIFICATION (OBD STATUS CHECK)
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1. Turn the ignition switch to ON (II).
2. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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3. DO THE PCM IDLE LEARN PROCEDURE .
4. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
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ENGINE SPEED
VEHICLE SPEED
MAP SENSOR
TP SENSOR
Current conditions
Values Unit
Signal
ENGINE SPEED
VEHICLE SPEED
MAP SENSOR
TP SENSOR
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5. Monitor the OBD STATUS for DTC P0101 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P0101 MAF SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEM
Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?
PASSED : Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated, go to the
indicated DTC's troubleshooting.
FAILED : Go to step 1 and recheck.
NOT COMPLETED : Meet the test condition, and check the OBD STATUS again.
DTC P0102: MAF SENSOR CIRCUIT LOW VOLTAGE
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