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Home >> Honda >> 2007 >> Accord Base, Standard, APG6 >> Repair and Diagnosis >> Engine Performance >> System >> Variable Valve Timing Electronic Control System (VTEC) And Variable Valve Timing (VTC ) System (Except Hybrid & V6) >> DTC Troubleshooting >> DTC P0344: CMP Sensor A Intermittent Interruption
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DTC P0344: CMP Sensor A Intermittent Interruption

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION )
  1. Turn the ignition switch ON (II).
  2. Clear the DTC with the HDS.
  3. Start the engine, and let it idle 10 seconds.
  4. Check the CMP NOISE A COUNT in the DATA LIST with the HDS.

    Are 0 counts indicated? 

    1. YES -  Go to step  7.
    2. NO -  Go to step 5.
  5. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
    • ENGINE SPEED
    • VSS
  6. Check the CMP NOISE A COUNT in the DATA LIST with the HDS.

    Are 0 counts indicated? 

    1. YES -  Go to step 7.
    2. NO -  Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at CMP sensor A and the ECM/PCM.
  7. Check for poor or loose connections and terminals at these locations:
    • CMP sensor A
    • ECM/PCM
    • Engine ground
    • Body ground

    Are the connections and terminals OK? 

    1. YES -  Go to step 8.
    2. NO -  Repair the connectors or terminals, then go to step  11.
  8. Check for damage on the CMP sensor A pulse plate (see CMP PULSE PLATE A REPLACEMENT ).

    Is the pulse plate damaged? 

    1. YES -  Replace the CMP sensor A pulse plate (see CMP PULSE PLATE A REPLACEMENT ), then go to step  11.
    2. NO -  Go to step 9.
  9. Turn the ignition switch OFF.
  10. Replace CMP sensor A (see CMP SENSOR A REPLACEMENT  ).
  11. Turn the ignition switch ON (II).
  12. Reset the ECM/PCM with the HDS.
  13. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
  14. Start the engine, and let it idle 10 seconds.
  15. Check for Temporary DTCs or DTCs with the HDS.

    Is DTC P0344 indicated? 

    1. YES -  Check for poor connections or loose terminals at CMP sensor A and the ECM/PCM, then go to step  1.
    2. NO -  Troubleshooting is complete. If any other Temporary DTCs are indicated, go to the indicated DTC's troubleshooting.
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