2006 ACURA CSX sensor

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DTC P0455:
DTC P0456:
Special Tools Required
YES
NO YES
NO
YES
NO
11-386EVAP System
DTC Troubleshooting (cont’d)
AB
C
EVAP System Large Leak
Detected
EVAP System Very Small Leak
Detected
The fuel system is designed to allow specified
maximum vacuum and pressure conditions. Do not
deviate from the vacuum and pressure tests as
indicated in these procedures. Excessive pressure/
vacuum would damage the EVAP components or
cause eventual fuel tank failure.
Vacuum pump/gauge, 0 30 in.Hg, Snap-on YA4000A
or equivalent, commercially available
NOTE:  Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
 Fresh fuel has a higher volatility that will create greater pressure/vacuum. The optimum condition for
testing is less than a full tank of fresh fuel. If possible,
to assist in leak detection, add 1 gallon of fresh fuel to
the tank (as long as it will not fill the tank), just before
starting these procedures.
1. Check the fuel fill cap (the cap must say TIGHTEN TO CLICK). It should turn 1/4 turn after it’s tight,
then it clicks.
Go to step 2.
Replace or tighten the cap, then go to step 30. 2. Check the fuel fill cap seal (A) and the fuel fill pipe
mating surface (B). Verify that the fuel fill cap tether
cord (C) is not caught under the cap.
Replace the fuel fill cap or the fuel fill pipe,
then go to step 29.
Go to step 3.
3. Turn the ignition switch to ON (II).
4. Clear the DTC with the HDS.
5. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister purge valve, or
the EVAP canister vent shut valve and the ECM/
PCM.
Go to step 6.
Is the correct f uel f ill cap installed and properlytightened? Is the f uel f ill cap seal missing or damaged, is the
f uel f i l l pi pe d amaged , or i s t he t et her cor d caughtund er the cap?
Is the result OK ?
08/08/21 14:32:36 61SNR030_110_0386
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO
11-387
AD
B C
D A
B
6. Turn the ignition switch to LOCK (0).
7. Check for a poor connection or damage at the fuel
tank vapor recirculation tube.
Go to step 8.
 Replace the fuel tank vapor recirculation tube, then go to step 29.
 If needed, replace the fuel tank (see page 11-339), then go to step 29.
8. Disconnect the fuel tank vapor recirculation tube (A) and the fresh air hose (B) from the EVAP
canister (C), and plug the EVAP canister ports (D). 9. Disconnect the vacuum hose (engine side) (A) from
the EVAP canister purge valve (B) in the engine
compartment, and connect a vacuum pump/gauge,
0 30 in.Hg, to the purge valve as shown.
10. Turn the ignition switch ON (II).
11. Select EVAP PCS ON in the INSPECTION MENU with the HDS.
12. Apply vacuum to the hose until the FTP reads 1.90 V ( 15.1 mmHg, 0.59 in.Hg).
NOTE: Be careful not to exceed the vacuum. If you
do, the FTP sensor can be damaged.
13. Select EVAP PCS OFF in the INSPECTION MENU with the HDS.
14. Monitor the FTP SENSOR in the DATA LIST for 1 minute with the HDS.
Go to step 15.
Go to step 22.
(cont’d)
*: This illustration shows K20Z2 engine.
IsthetubeOK?
Does the voltage increase more than 0.2 V( 0.5 mmH g, 0.1 i n.H g)?
08/08/21 14:32:37 61SNR030_110_0387
ProCarManuals.com
DYNOMITE -2009-

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YES
NO YES
NO
11-388
EVAP System
DTC Troubleshooting (cont’d)
A
B
C
A B
15. Turn the ignition switch to LOCK (0).
16. Disconnect the vacuum pump/gauge from the
EVAP canister purge valve.
17. Reconnect the vacuum hose (engine side) (A) to the EVAP canister purge valve (B) and disconnect the
vacuum hose (EVAP canister side) (C) from the
EVAP canister purge valve, then connect a vacuum
pump/gauge 0 30 in.Hg, to the vacuum hose as
shown.
18. Turn the ignition switch to ON (II).
19. Apply vacuum to the hose until the FTP reads 1.90 V ( 15.1 mmHg, 0.59 in.Hg).
NOTE: Be careful not to exceed the vacuum. If you
do, the FTP sensor can be damaged.
20. Monitor the FTP SENSOR in the DATA LIST for 1 minute with the HDS.
Go to step 21.
Replace the EVAP canister purge valve
(see page 11-409), then go to step 29. 21. Check for a loose or damaged EVAP canister purge
line between the EVAP canister and the EVAP
canister purge valve or a leaking the EVAP canister.
Replace these parts, then go to step 29:
 FTP sensor O-ring
 EVAP canister vent shut valve case and O-ring
EVAPcanister Reconnect or repair the EVAP canister purge
line, then go to step 29.
22. Reconnect the fresh air hose (A) to the EVAP canister (B).
*: This illustration shows K20Z2 engine.
Does the voltage increase more than 0.2 V( 2.5 mmH g, 0.1 i n.H g)? Ar e t he l i ne and t he E V AP cani st er OK ?
08/08/21 14:32:37 61SNR030_110_0388
ProCarManuals.com
DYNOMITE -2009-

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YES
NO YES
NO
YES
NO
11-389
A
B
C
23. Reconnect the vacuum hose (engine side) (A) to theEVAP canister purge valve (B) and disconnect the
vacuum hose (EVAP canister side) (C) from the
EVAP canister purge valve, then connect a vacuum
pump/gauge 0 30 in.Hg, to the vacuum hose as
shown.
24. Select EVAP CVS ON in the INSPECTION MENU with the HDS.
25. Apply vacuum to the EVAP system until the FTP reads 1.90 V ( 0.59 in.Hg, 15.1 mmHg).
NOTE: Be careful not to exceed the vacuum. If you
do, the FTP sensor can be damaged.
26. Monitor the FTP SENSOR in the DATA LIST for 1 minute with the HDS.
Replace the EVAP canister vent shut valve
(see page 11-409), then go to step 29.
Go to step 27.
27. Select EVAP CVS OFF in the INSPECTION MENU. 28. Check these parts for looseness or damage:
 Fuel fill pipe
 Fuel vapor return pipe
Check the fuel tank unit base gasket
(see page 11-335), and check the fuel tank, then go
to step 29.
Repair or replace the damaged parts, then go
to step 29.
29. Reconnect all hoses and connectors.
30. Turn the ignition switch to ON (II).
31. Reset the ECM/PCM with the HDS.
32. Do the ECM/PCM idle learn procedure (see page 11-310).
33. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister purge valve,
the EVAP canister vent shut valve, and the ECM/
PCM, then go to step 1.
*: This illustration shows K20Z2 engine.
Does the voltage increase more than 0.2 V ( 2.5 mmH g, 0.1 i n.H g)? Ar e t he par t s OK ?
Is the result OK ?
08/08/21 14:32:38 61SNR030_110_0389
ProCarManuals.com
DYNOMITE -2009-



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DTC P0457:
YES
NO
YES
NO YES
NO
YES
NO
11-390
EVAP System
DTC Troubleshooting (cont’d)
A
B
C A
EVAP System Leak Detected/Fuel
Fill Cap Loose or Missing
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Check the fuel fill cap (the cap must say TIGHTEN TO CLICK). It should turn 1/4 turn after it’s tight,
then it clicks.
Go to step 2.
Replace or tighten the cap, then go to step 19.
2. Check the fuel fill cap seal (A) and the fuel fill pipe mating surface (B). Verify that the fuel fill cap tether
cord (C) is not caught under the cap.
Replace the fuel fill cap or the fuel fill pipe,
then go to step 19.
Go to step 3.
3. Turn the ignition switch to ON (II).
4. Clear the DTC with the HDS. 5. Do the EVAP FUNCTION TEST in the INSPECTION
MENU with the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the FTP sensor or the EVAP canister vent shut
valve and the ECM/PCM.
Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Remove the EVAP canister vent shut valve from the EVAP canister (see page 11-409).
8. Connect the 2P connector to the EVAP canister vent shut valve.
9. Turn the ignition switch to ON (II).
10. Select EVAP CVS ON in the INSPECTION MENU with the HDS.
11. Check the EVAP canister vent shut valve (A) operation.
Check the routing of the EVAP canister vent
tube,thengotostep18.
Go to step 12.
Is the correct f uel f ill cap installed and properlytightened?
Is the f uel f ill cap seal missing or damaged, is thef uel f i l l pi pe d amaged , or i s t he t et her cor d caughtund er the cap? Is the result OK ?
Does t he v al v e oper at e?
08/08/21 14:32:38 61SNR030_110_0390
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO
YES
NO
YES
NO
DTC P0496:
11-39111-391
12. Turn the ignition switch to LOCK (0).
13. Replace the EVAP canister vent shut valve
(see page 11-409).
14. Turn the ignition switch to ON (II).
15. Reset the ECM/PCM with the HDS.
16. Do the ECM/PCM idle learn procedure (see page 11-310).
17. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Troubleshooting is complete.
Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister vent shut
valve, and the ECM/PCM, then go to step 1.
18. Reinstall the EVAP canister vent shut valve.
19. Turn the ignition switch to ON (II).
20. Reset the ECM/PCM with the HDS.
21. Do the ECM/PCM idle learn procedure (see page 11-310).
22. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Troubleshooting is complete.
Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister vent shut
valve, and the ECM/PCM, then go to step 1. NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister purge valve,
the EVAP canister vent shut valve, and the ECM/
PCM.
Go to step 4.
4. Turn the ignition switch to LOCK (0).
5. Replace the EVAP canister purge valve (see page 11-409).
6. Turn the ignition switch to ON (II).
7. Reset the ECM/PCM with the HDS.
8. Do the ECM/PCM idle learn procedure (see page 11-310).
9. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Troubleshooting is complete.
Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister purge valve,
the EVAP canister vent shut valve, and the ECM/
PCM, then go to step 1.EVAP System High Purge Flow
Detected
Is the result OK ?
Is the result OK ? Is the result OK ?
Is the result OK ?
08/08/21 14:33:20 61SNR030_110_0391
ProCarManuals.com
DYNOMITE -2009-

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DTC P0497:
Special Tools Required
YES
NO
YES
NO
YES
NO YES
NO
11-392EVAP System
DTC Troubleshooting (cont’d)
A
C
07JAZ-001000B
B
EVAP System Low Purge Flow
Detected
 Vacuum/pressure gauge, 0 4 in.Hg, 07JAZ-001000B
 Vacuum pump/gauge, 0 30 in.Hg, Snap-on YA4000A
or equivalent, commercially available
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3). 1. Check the fuel fill cap installation (The cap must say TIGHTEN TO CLICK. The cap should tighten 1/4 turn
after it is tight.).
Go to step 2.
Properly install the fuel fill cap, then go to
step 23.
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister purge valve,
the EVAP canister vent shut valve, and the ECM/
PCM.
Go to step 5.
5. Check for a loose or damaged EVAP canister purge line between the intake manifold and the EVAP
canister purge valve.
Go to step 6.
Reconnect or repair the EVAP canister purge
line, then go to step 23. 6. Disconnect the vacuum hose (A) from the EVAP
canister purge valve (B) in the engine compartment,
and connect a T-fitting (C) between the vacuum
gauge, the vacuum pump/gauge, 0 30 in.Hg, and
the vacuum hose as shown.
7. Select EVAP PCS ON in the INSPECTION MENU with the HDS.
8. Slowly apply about 2 kPa (15 mmHg, 0.6 in.Hg) of vacuum to the hose.
Replace the EVAP canister purge valve, then
go to step 22.
Go to step 9.
Is the f uel f ill cap installed and properlytightened?
Is the result OK ?Is the line OK ? Does i t hol d v acuum?
08/08/21 14:33:20 61SNR030_110_0392
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
11-393
A 07JAZ-001000B
A B
9. Reconnect the vacuum hose to the EVAP canister
purge valve.
10. Disconnect the vacuum hose from the purge line (at the EVAP canister side), and connect a T-fitting (A)
between the vacuum gauge and the vacuum pump/
gauge, 0 30 in.Hg, as shown.
11. Select EVAP PCS ON in the INSPECTION MENU with the HDS.
12. Slowly apply about 2 kPa (15 mmHg, 0.6 in.Hg) of vacuum to the hose.
Check for a restricted EVAP canister purge
line between the EVAP canister purge valve and the
EVAPcanister,thengotostep22.
Go to step 13. 13. Remove the FTP sensor with its connector
connected (see page 11- 408).
14. Connect a T-fitting (A) between the vacuum pump/ gauge, 0 30 in.Hg, the vacuum pump, and the FTP
sensor (B) as shown.
15. Check and record the FTP SENSOR reading in the DATA LIST with the HDS.
16. Slowly apply about 1.3 kPa (10 mmHg, 0.4 in.Hg) of vacuum to the hose.
(cont’d)
Does i t hol d v acuum?
08/08/21 14:33:21 61SNR030_110_0393
ProCarManuals.com
DYNOMITE -2009-