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DTC P0101 MAF Sensor Circuit Range/Performance Problem Honda Crosstour I

Testing & Diagnostics ~539 words

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»(ref-360066-S42288736582010042600000) (+) 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»(ref-360080-S20771661482010042600000) (+).
  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»(ref-360079-S22847966492010042600000) (+).
  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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