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MASTER TECH
MASTER TECH, Tech
Category: Honda
Satisfied Customers: 5427
Experience:  26 YEARS of real world experience .
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Check Gas Cap light flashing on odometer bar. Checked cap

Resolved Question:

"Check Gas Cap" light flashing on odometer bar. Checked cap and it was on properly. Light won't shut off?
Submitted: 4 years ago.
Category: Honda
Expert:  MASTER TECH replied 4 years ago.
HiCustomer Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:<br /><br />-What year is your Honda?<br />-What model is your Honda?<br />-How many miles are on your Honda?<br />-What type of engine is in your Honda?<br />-What have you already tried?<br /><br />Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Customer: replied 4 years ago.
37k miles.
Expert:  MASTER TECH replied 4 years ago.

ok their is a evap test that will need to be done at honda. this is a emission warranty item.

CHECK FUEL CAP, TIGHTEN

FUEL CAP Messages

NOTE: This article applies to '05-06 Accords,

'06 Civics, '05-06 CR-Vs, '05-06 Elements,

'05-06 Odysseys, '05-06 Pilots, '06 Ridgelines,

and '06 S2000s.

If a vehicle's fuel fill cap is loose or missing, and

the ECM/PCM detects an EVAP system leak when

it runs the EVAP monitor, the CHECK FUEL CAP

message appears on the information display when

the engine is started. (On '06 Odyssey Touring

models and future Honda models, it's the

TIGHTEN FUEL CAP message.) A temporary

DTC is also stored in the ECM/PCM's memory. If

this happens, there's really no need for the owner

to bring the vehicle in for service. All he or she

has to do is shut off the engine and make sure the

fuel fill cap is in place and it's properly tightened

(it's one or three clicks, depending on what's

written on the cap).

Although the owner can cycle the message from

the display with the reset button (the actual

button name varies by model), the temporary

DTC that's setting the message is still there. This

means the message never really goes away. It can

be cycled back with the reset button, and it comes

on again if the ignition switch is cycled or the

engine is restarted. This message keeps coming

back until the EVAP monitor runs again and it

finds no EVAP system leak. This could take several

days, even weeks, depending on how often the

vehicle is driven.

If, when the next EVAP monitor runs, the cap

wasn't tightened or there's another EVAP system

leak detected, the MIL comes on and the message

goes off. A permanent DTC is now stored in the

ECM/PCM's memory. If the owner now tightens

the cap, the MIL should go off after the next EVAP

monitor run, yet, this could still take days or

weeks. If the MIL is still on after that monitor run,

then it's time to bring the vehicle in for service.

If the vehicle comes into your shop with the fuel

cap message or the MIL on, make sure the fuel fill

cap is in place and properly tightened. Record the

DTC, then clear it with the HDS, and run the EVAP

system function test. If there's still a problem,

press on with normal troubleshooting

MASTER TECH, Tech
Category: Honda
Satisfied Customers: 5427
Experience: 26 YEARS of real world experience .
MASTER TECH and 2 other Honda Specialists are ready to help you

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