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DTC P0101 MAF Sensor Circuit Range/Performance Problem

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Honda Crosstour, 2014 Honda Crosstour, 2013 Honda Crosstour, 2012 Honda Crosstour, and 2011 Honda Accord Crosstour. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION (+).
  • If DTC P0121 P2119 P0121 and/or P2119 are stored at the same time as DTC P0101 troubleshoot those DTCs first, then recheck for DTC P0101.
  1. Check for poor connections or damage to these parts:
    • PCV hose
    • Intake air duct
    • Air cleaner
    • Purge (PCS) line
    • Brake booster
    • Brake booster hose

      Are the parts OK? 

      YES  -Go to next step.

      NO  -Repair or replace the damaged part(s), then go to step  13.

  2. Check for damage or incorrectly installed air duct in the air cleaner.

    Is it OK? 

    YES  -Go to next step.

    NO  -Reconnect or replace the air duct, then go to step  13.

  3. Check for a dirty air cleaner element.

    Is it dirty? 

    YES  -Replace the air cleaner element (see AIR CLEANER ELEMENT INSPECTION/REPLACEMENT (+) then go to step  14.

    NO  -Go to next step.

  4. Turn the ignition switch to ON (II).
  5. Check the MAF SENSOR in the DATA LIST with the HAS.

    Is there about 0.2 GM/s or 0.5 V? 

    YES  -Go to next step.

    NO  -Go to step  12.

  6. Start the engine.
  7. Vary the engine speed between 2, 000 and 3, 000 RPM.
  8. Check the MAF SENSOR in the DATA LIST with the HAS.

    Does the reading change? 

    YES  -Go to  10 .

    NO  -Go to step  12.

  9. Hold the engine speed at 3, 000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.
  10. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
    • ENGINE SPEED
    • VSS
    • MAP SENSOR
    • MAF SENSOR
  11. Monitor the OBD STATUS for DTC P0101 in the DTCs MENU with the HAS.

    Does the HAS indicate FAILED? 

    YES  -Go to next step.

    NO  -If the HAS 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 HAS indicates NOT COMPLETED, go to step  10 and recheck.

  12. Turn the ignition switch to LOCK (0).
  13. Replace the MAF sensor/I AT sensor (see MAF SENSOR/IAT SENSOR REPLACEMENT  (+).
  14. Turn the ignition switch to ON (II).
  15. Reset the PCM with the HAS.
  16. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE (+).
  17. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
    • ENGINE SPEED
    • VSS
    • MAP SENSOR
    • MAF SENSOR
  18. Check for Pending or Confirmed DTCs with the HAS.

    Is DTC P0101 indicated? 

    YES  -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step  1.

    NO  -Go to next step.

  19. Monitor the OBD STATUS for DTC P0101 in the DTCs MENU with the HAS.

    Does the HAS indicate PASSED? 

    YES  -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step  18, go to the indicated DTC's troubleshooting.

    NO  -If the HAS indicates FAILED, check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step  1. If the HAS indicates NOT COMPLETED, go to step  17.

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