Fun with a P0455 Code - Land Rovers Only

gragravar · 05-19-2008, 12:55 PM

last week my '04 discovery had the service engine soon light pop on. brought it to the dealer to check it out (still under warranty). they checked the gas cap and found it not sealing tightly. after replacing it, they pressure checked the system and found a leak detection pump was leaking and replaced it too. After a quick road test they declared all was good and sent me on my way.

Friday, the light popped on again. So, we're back at the dealer today to keep figuring this one out.

Oh well, rover is paying for it and for the loaner car.

I'll report back once I hear more and know more about whats causing this one.

Wild Driver · 05-19-2008, 03:39 PM

When you find out please post. I am working on the same code on my '99. I replaced the gas cap and about 180 miles later the light came back on. WTF?

gragravar · 05-19-2008, 05:17 PM

Quote:

Originally Posted by Wild Driver

When you find out please post. I am working on the same code on my '99. I replaced the gas cap and about 180 miles later the light came back on. WTF?

will do. I should have the car back from them tomorrow with more information then. FWIW, my light only took about 30 miles to re-appear.

gragravar · 05-20-2008, 11:42 AM

update - the fixes before apparently fixed the P0455 code. the current check engine light is being caused by a P1000 unknown code. the dealer talked to land rover corporate who suggested an ECU re-flash. they have done this and are doing an extended drive test to be sure it doesnt recur. I should get the car back tomorrow. looks like one more day in the loaner.

kkahao1 · 05-23-2008, 07:08 PM

I got the same code today. Have been noticing cap was bad. Going to replace. Let me know if you guys find out anything else.

bugatti T35 · 06-12-2008, 07:45 AM

Hi,

I got the same code on my 2003 Disco. The gas cap seems fine. Is there any way to check it?
Also, where is the leak detection pump located and how to check that?

Thanks.

bugatti T35 · 06-12-2008, 08:37 AM

Hi,

I checked my codes last night. The only one that came up was P0455.
The gas cap seems fine:wave. Can anyone advise how to test it?
Also I would like to know where the "leak detection pump" is and how to test it.

Thanks.

bugatti T35 · 06-12-2008, 08:38 AM

Sorry, didn't mean to repeat myself, I thought my first post was lost in the "ether" when it didn't show up, now I see it!

Apologies.

duckhunteryolo · 06-12-2008, 08:11 PM

Welcome to the club, I have replaced my cap twice and mine is an '02. I think it is one of those sooner or later codes that will hit most Land Rover owners sad to say!

05-19-2008, 12:55 PM	#1 (permalink)
gragravar Senior Member Join Date: Jul 2007 Location: Brighton, CO Posts: 683 Gallery: 0	Fun with a P0455 Code last week my '04 discovery had the service engine soon light pop on. brought it to the dealer to check it out (still under warranty). they checked the gas cap and found it not sealing tightly. after replacing it, they pressure checked the system and found a leak detection pump was leaking and replaced it too. After a quick road test they declared all was good and sent me on my way. Friday, the light popped on again. So, we're back at the dealer today to keep figuring this one out. Oh well, rover is paying for it and for the loaner car. I'll report back once I hear more and know more about whats causing this one. __________________ current rides: 2004 Land Rover Discovery II SE7 (still stock) 1992 Range Rover Classic (work in Progress) 2003 Audi allroad (more than a little modified) 1999 BMW R1100S 2001 BMW 330i (wife needed something to drive)

05-20-2008, 11:42 AM	#4 (permalink)
gragravar Senior Member Join Date: Jul 2007 Location: Brighton, CO Posts: 683 Gallery: 0	update - the fixes before apparently fixed the P0455 code. the current check engine light is being caused by a P1000 unknown code. the dealer talked to land rover corporate who suggested an ECU re-flash. they have done this and are doing an extended drive test to be sure it doesnt recur. I should get the car back tomorrow. looks like one more day in the loaner. __________________ current rides: 2004 Land Rover Discovery II SE7 (still stock) 1992 Range Rover Classic (work in Progress) 2003 Audi allroad (more than a little modified) 1999 BMW R1100S 2001 BMW 330i (wife needed something to drive)

05-23-2008, 07:08 PM	#5 (permalink)
kkahao1 Ghost Face Killa Join Date: May 2008 Location: Baton Rouge, Louisiana Posts: 19 Gallery: 0	Pick Me Pick Me I got the same code today. Have been noticing cap was bad. Going to replace. Let me know if you guys find out anything else.

06-12-2008, 08:37 AM	#7 (permalink)
bugatti T35 Member Join Date: May 2008 Location: Nashville, TN Posts: 18 Gallery: 0	Same code Hi, I checked my codes last night. The only one that came up was P0455. The gas cap seems fine:wave. Can anyone advise how to test it? Also I would like to know where the "leak detection pump" is and how to test it. Thanks.

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05-19-2008, 03:39 PM	#2 (permalink)
Wild Driver Member Join Date: Nov 2007 Posts: 33 Gallery: 0	When you find out please post. I am working on the same code on my '99. I replaced the gas cap and about 180 miles later the light came back on. WTF?

06-12-2008, 07:45 AM	#6 (permalink)
bugatti T35 Member Join Date: May 2008 Location: Nashville, TN Posts: 18 Gallery: 0	Hi, I got the same code on my 2003 Disco. The gas cap seems fine. Is there any way to check it? Also, where is the leak detection pump located and how to check that? Thanks.

06-12-2008, 08:38 AM	#8 (permalink)
bugatti T35 Member Join Date: May 2008 Location: Nashville, TN Posts: 18 Gallery: 0	Sorry, didn't mean to repeat myself, I thought my first post was lost in the "ether" when it didn't show up, now I see it! Apologies.

06-12-2008, 08:11 PM	#9 (permalink)
duckhunteryolo Member Join Date: Jun 2008 Posts: 15 Gallery: 0	Welcome to the club, I have replaced my cap twice and mine is an '02. I think it is one of those sooner or later codes that will hit most Land Rover owners sad to say!

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