DTC Troubleshooting: P0344
DTC P0344: CMP Sensor A Circuit Intermittent Interruption
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0344 CMP Sensor A Circuit Intermittent Interruption
    

1.
Problem verification (idling):

Problem verification (idling)
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode.

?4.
Start the engine, and let it idle for 10 seconds.

?5.
Monitor the OBD STATUS for DTC P0344 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P0344 CMP Sensor A Circuit Intermittent Interruption
  

Does the HDS indicate FAILED?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
If the HDS indicates PASSED, go to step 2. If the HDS indicates NOT COMPLETED, keep idling until a result comes on.
2.
Problem verification (test-drive):

Problem verification (test-drive)
?1.
Test-drive the vehicle for several minutes in the range of these recorded on-board snapshot parameters:
ENGINE SPEED
VEHICLE SPEED

?2.
Monitor the OBD STATUS for DTC P0344 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P0344 CMP Sensor A Circuit Intermittent Interruption
  

Does the HDS indicate FAILED?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at CMP sensor A and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot. If the HDS indicates NOT COMPLETED, retest and check the OBD STATUS again.?
3.
CMP sensor circuit connectors and terminals condition check:

CMP sensor circuit connectors and terminals condition check
?1.
Check for poor connections or loose terminals at these locations:
CMP sensor A
PCM
Engine ground
Body ground

Are the connections and terminals OK?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
Repair the connections or terminals.?
4.
CMP pulse plate A visual check:

CMP pulse plate A visual check
?1.
Remove the cylinder head cover, then check for damage to CMP pulse plate A on the intake camshaft.

Is the pulse plate damaged or loose?

     
YES
     
     
     
     
NO