P0340 CMP SENSOR A NO PULSE
Is DTC P0340 indicated?
YES : Check for poor connections or loose terminals at CMP sensor A and the PCM. If the PCM was updated,
substitute a known-good PCM See PCM REMOVAL AND INSTALLATION or PCM UPDATE , then
recheck. If the PCM was substituted, go to step 1.
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM UPDATE
or PCM REMOVAL AND INSTALLATION . If any other Pending or Confirmed DTCs are indicated, go to
the indicated DTC's troubleshooting.
DTC P0341: CMP SENSOR A AND CKP SENSOR INCORRECT PHASE
DETECTED
Fig. 167: DTC Troubleshooting Flow Chart (P0341)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and
review the general troubleshooting information See HOW TO TROUBLESHOOT
THE FUEL AND EMISSIONS SYSTEMS or HOW TO TROUBLESHOOT THE A/T
SYSTEM .
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P0341 CMP SENSOR A AND CKP SENSOR INCORRECT
PHASE DETECTED
1. Problem verification:
ο‘
1. Turn the ignition switch to ON (II).
ο‘
2. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
ο‘
ο‘
3. Test-drive at a steady speed between 19-38 mph (30-60 km/h) for 10 minutes.
4. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P0341 CMP SENSOR A AND CKP SENSOR
INCORRECT PHASE DETECTED
Is DTC P0341 indicated?
YES : Go to step 5.
NO : Go to step 2.
2. VTC system check (VTC TEST with the HDS):
ο‘
1. Do the VTC TEST in the INSPECTION MENU with the HDS.
Is the result OK?
YES : Go to step 3.
NO : Go to step 5.
3. VTC system check (VTC STATUS check with the HDS):
ο‘
1. Test-drive at a steady speed between 19-38 mph (30-60 km/h) for 10 minutes.
2. Check the parameter(s) below with the HDS.
ο‘
Threshold Current conditions
Signal
Values Unit Values
Unit
VTC STATUS ON
Do the current condition(s) match the threshold?
YES : Go to step 4.
NO : Redo the test-drive, then recheck the VTC STATUS.
4. VTC system check (DTC check):
ο‘
1. Monitor the OBD STATUS for DTC P0341 in the DTCs MENU with the HDS.
OBD
STATUS
DTC Description
P0341 CMP SENSOR A AND CKP SENSOR INCORRECT PHASE
DETECTED
Does the HDS indicate FAILED?
YES : Go to step 5.
NO : If the HDS indicates PASSED, intermittent failure, the system is OK at this time.
If the HDS indicates NOT COMPLETED, go to step 3 and recheck.
5. VTC oil control valve operation check:
ο‘
1. TEST THE VTC OIL CONTROL SOLENOID VALVE .
Is the VTC oil control solenoid valve OK?
YES : Go to step 6.
NO : REPLACE THE VTC OIL CONTROL SOLENOID VALVE , then do the repair verification .
6. Camshaft timing check:
ο‘
1. Check the camshaft timing See VALVE, SPRING, AND VALVE SEAL REMOVAL AND
INSTALLATION or VALVE CLEARANCE ADJUSTMENT .
Is the camshaft timing OK?
YES : Go to step 7.
NO : Reset the camshaft timing See VALVE CLEARANCE ADJUSTMENT or VALVE, SPRING,
AND VALVE SEAL REMOVAL AND INSTALLATION , then do the repair verification .
7. Cam chain check:
ο‘
1. CHECK FOR DAMAGE OR STRETCH AT THE CAM CHAIN .
Is the cam chain damaged or stretched?
YES : REPLACE THE CAM CHAIN AND THE AUTO-TENSIONER , then do the repair
verification .
NO : Go to step 8.
8. VTC actuator check:
ο‘
1. INSPECT THE VTC ACTUATOR .
Is the actuator OK?
YES : Go to step 9.
NO : REPLACE THE VTC ACTUATOR , then do the repair verification .
9. PGM-FI system check (DTC check):
ο‘
ο‘
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 .
ο‘
ο‘
3. DO THE PCM IDLE LEARN PROCEDURE .
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 .
ο‘
ο‘
5. Test-drive at a steady speed between 19-38 mph (30-60 km/h) for 10 minutes.
6. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P0341 CMP SENSOR A AND CKP SENSOR
INCORRECT PHASE DETECTED
Is DTC P0341 indicated?
YES : Check for poor connections or loose terminals at the VTC oil control solenoid valve and the PCM,
then go to step 1.
NO : Intermittent failure, the system is OK at this time.
REPAIR VERIFICATION (OBD STATUS CHECK)
ο‘
ο‘
1. Turn the ignition switch to ON (II).
2. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS
SYSTEMS or HOW TO TROUBLESHOOT THE A/T SYSTEM .
ο‘
ο‘
3. DO THE PCM IDLE LEARN PROCEDURE .
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 .
5. Test-drive at a steady speed between 19-38 mph (30-60 km/h) for 10 minutes.
6. Monitor the OBD STATUS for DTC P0341 in the DTCs MENU with the HDS.
ο‘
ο‘
DTC Description
OBD STATUS
P0341 CMP SENSOR A AND CKP SENSOR INCORRECT PHASE DETECTED
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 P0344: CMP SENSOR A CIRCUIT INTERMITTENT INTERRUPTION
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