Fig. 402: DTC Troubleshooting Flow Chart (P2422)
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 .
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P2422 EVAP CVS STUCK CLOSED MALFUNCTION
1. EVAP system check:
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1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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3. Turn the ignition switch to LOCK (0).
4. Remove the fuel fill cap, and wait 1 minute.
5. Turn the ignition switch to ON (II).
6. Check the parameter(s) below with the HDS.
Threshold Current conditions
Signal
Values Unit Values
Unit
-0.67-0.67 kPa
FTP SENSOR
2.4-2.6
V
Do the current condition(s) match the threshold?
YES : Go to step 2.
NO : Go to step 4.
2. Problem verification:
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1. Install the fuel fill cap.
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2. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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3. Start the engine, and let it idle without load (in P or N) until the radiator fan comes on.
4. Monitor the EVAP PC DUTY (purge control duty) in the DATA LIST with the HDS, while
holding the engine speed at 3, 000 rpm with the EVAP PC DUTY at 20 % or more for at least 4
minutes, then let the engine idle.
Current conditions
Signal
Values
Unit
EVAP PC DUTY
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5. Monitor the OBD STATUS for DTC P2422 in the DTCs MENU with the HDS.
DTC Description
OBD Status
P2422 EVAP CVS STUCK CLOSED MALFUNCTION
Does the HDS indicate FAILED?
YES : The failure is duplicated. Go to step 3.
NO : If the HDS indicates PASSED, there might be an intermittent failure, and the system is OK at this
time. Check the on-board snapshot, and repeat the driving conditions when the DTC set (fuel level,
engine speed, vehicle speed, and outside temperature). If no problem is found, check for poor connections
or loose terminals between the FTP sensor and the PCM. Also check for a blockage in the FTP sensor
vent port and vent hose, and the EVAP canister vent hose and drain joint. If the HDS indicates NOT
COMPLETED, let the engine idle until a result comes on.
3. EVAP canister vent shut valve operation check:
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1. Turn the ignition switch to LOCK (0).
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2. REMOVE THE EVAP CANISTER VENT SHUT VALVE FROM THE EVAP
CANISTER .
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3. Connect the 2P connector to the EVAP canister vent shut valve.
4. Turn the ignition switch to ON (II).
5. Select EVAP TEST in the INSPECTION MENU, and do the EVAP CVS ON in the SINGLE
SOLENOID with the HDS.
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6. Check the EVAP canister vent shut valve (A) operation.
Fig. 403: Identifying EVAP Canister Vent Shut Valve
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is the valve free of corrosion, and does it operate properly?
YES : Check for a blockage in the EVAP canister, the vent hoses, and the drain joint, and repair it if
needed. Install the EVAP canister vent shut valve, then do the repair verification .
NO : REPLACE THE EVAP CANISTER VENT SHUT VALVE , then do the repair verification .
4. FTP sensor vent hose restriction check:
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1. Disconnect the vent hose (A) from the FTP sensor (B).
Fig. 404: Identifying Vent Hose And FTP Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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2. Check the parameter(s) below with the HDS.
Threshold Current conditions
Signal
Values Unit Values
Unit
-0.67-0.67 kPa
FTP SENSOR
2.4-2.6
V
Do the current condition(s) match the threshold?
YES : Check for a blockage in the FTP sensor vent hose, then do the repair verification .
NO : The FTP sensor vent hose is OK. Go to step 5.
5. FTP sensor port restriction check:
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1. Turn the ignition switch to LOCK (0).
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2. Remove the FTP sensor (A) from the EVAP canister with its connector connected.
Fig. 405: Identifying FTP Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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3. Turn the ignition switch to ON (II).
4. Check the parameter(s) below with the HDS.
Threshold Current conditions
Signal
Values Unit Values
Unit
-0.67-0.67 kPa
FTP SENSOR
2.4-2.6
V
Do the current condition(s) match the threshold?
YES : The FTP sensor port is OK. The EVAP canister has an internal blockage; REPLACE THE EVAP
CANISTER , then do the repair verification .
NO : REPLACE THE FTP SENSOR , then do the repair verification .
REPAIR VERIFICATION (OBD STATUS CHECK)
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1. Turn the ignition switch to LOCK (0).
2. Install the parts in the reverse order of removal.
3. Turn the ignition switch to ON (II).
4. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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5. DO THE PCM IDLE LEARN PROCEDURE .
6. Monitor the EVAP PC DUTY (purge control duty) in the DATA LIST with the HDS, while holding
the engine speed at 3, 000 rpm with the EVAP PC DUTY at 20 % or more for at least 4 minutes, then let
the engine idle.
Current conditions
Values Unit
Signal
EVAP PC DUTY
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7. Monitor the OBD STATUS for DTC P2422 in the DTCs MENU with the HDS.
DTC Description
OBD Status
P2422 EVAP CVS STUCK CLOSED MALFUNCTION
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 : Hold the engine speed at 3, 000 rpm with the EVAP PC DUTY at 20% or more until a
result comes on.
DTC P2610: PCM IGNITION OFF INTERNAL TIMER MALFUNCTION
Fig. 406: DTC Troubleshooting Flow Chart (P2610)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and
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