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Can't clear CEL, code P0455

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10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCan't clear CEL, code P0455

Leading reported evidence

Check engine-warning-light/

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

http://www.revmods.com/check-engine-warning-light/

Can't clear CEL, code P0455
Read full discussion summary

Leading evidence: 'Check engine-warning-light/' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check engine-warning-light/' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 10 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check traps every other day or so

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Then check the traps every other day or so.

Can't clear CEL, code P0455

Clean car up and find a way

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

If mice have been at the car you have to fix the damage, clean the car up and find a way to even though the mice will still be attracted -- initially -- to the car discouraging the mice from doing anything more than maybe kicking the tires.

Can't clear CEL, code P0455

Inspect car

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

If you catch a mouse in the car then you need to be very thorough and inspect the car for any signs of a nest.

Can't clear CEL, code P0455

Run ever time you turn the key

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The EPA vapor leak test is run ever time you turn the key to the on position.

Can't clear CEL, code P0455
Frequently discussed actions (6)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check engine-warning-light/

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

http://www.revmods.com/check-engine-warning-light/

Can't clear CEL, code P0455

Check traps every other day or so

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Then check the traps every other day or so.

Can't clear CEL, code P0455

Clean car up and find a way

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

If mice have been at the car you have to fix the damage, clean the car up and find a way to even though the mice will still be attracted -- initially -- to the car discouraging the mice from doing anything more than maybe kicking the tires.

Can't clear CEL, code P0455

Inspect car

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

If you catch a mouse in the car then you need to be very thorough and inspect the car for any signs of a nest.

Can't clear CEL, code P0455

Run ever time you turn the key

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The EPA vapor leak test is run ever time you turn the key to the on position.

Can't clear CEL, code P0455

Use reader properly

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I an using the reader properly.

Can't clear CEL, code P0455
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have had the CEL light on for a couple of days, so I bought a code reader tonight. I hooked it up and it showed P0455. I was expecting that, as I have had it a few times before, and it was always a loose gas cap. The problem is that I can't get the CRL light go off. I do an erase cycle, and the light stays on. I an using the reader properly. Any ideas on why the light won't go out. I have been here for a couple of hours doing searches, and it seemd like everyone clears codes and turns off the lights all the time. Johnny

POST 2Original post

http://www.revmods.com/check-engine-warning-light/ I hope the above helps.

POST 3Original post

Quotes source post: 7202016

Not all products clear codes. Straight 'readers' will not unless they have software loaded that allows this.

POST 4Original post

If you don't fix the problem then the light gets turned on again by the DME. P0455 says that fuel system vapor leak test is failing (required by US EPA and most states smog tests). This test is run at every engine start. Most likely causes are a bad gas cap o-ring, a bad gas cap, or badly leaking EVAP canister )or one of the EVAP lines). You need to fix the cause to get the light to stay off.

POST 5 / ORIGINAL POSTEROriginal post

Thanks guys, Loren - I was thinking that something must be really really loose or bad to have the light go on so fast. I am going to check something else out. I have a detached garage in my back yard that I keep the cab in, and unfortunately there has been a bunch of mice living in there too. I have been slowly getting rid of them, but one of them may have gotten up into the car and chewed a wire. I saw this as a cause in a couple of posts. I am going to keep thew car out of the garage until all mice are gone. What a pain in the butt. Johnny

POST 6Original post

Quotes source post: 7203130

If mice have been at the car moving the car out of the garage will not long keep the mice out of the car. They'll still be drawn to the car cause of the smell of their presence and the fact that a little used or infrequently used car represents a nice mouse house in or out of a garage. If mice have been at the car you have to fix the damage, clean the car up and find a way to even though the mice will still be attracted -- initially -- to the car discouraging the mice from doing anything more than maybe kicking the tires. Sincerely, Macster.

POST 7 / ORIGINAL POSTEROriginal post

I don't know if the mice have been in the car, I have just read a few posts about it happening. The car is a daily driver as well. I put the hard top on in the winter and rip around town in it. I will post if I find any evidence of mice. I went through the engine compartment last night with a high powered flashlight and a dental mirror, and there have been no mice there, it is spotless. I will look in the front around the gas tank next. Johnny

POST 8Original post

Quotes source post: 7204341

Missed the daily driver part before. If you drive car every day, or even less often, mice are not in the car. My WAG is the car needs to sit a couple of weeks, although if one parks it where mice are the mice can get in the car in no time. First night. If car parked in garage and mice sign spotted around the garage almost certainly mice are in the car. If garage clear of mice sign, car is likely clear as well. The mice will nest in a car but they have to forage for food and water outside of the car. If car parked outside or in an area where mice sign hard to spot...you might want to put a couple of mouse traps in the car baited with a tiny dab of peanut butter. Then check the traps every other day or so. Just glance at traps. Don't make a big fuss around the car. If you catch a mouse chances are there is another. A danger is if you catch momma mouse and she has babies they'll starve and die in the car which stinks up the car when it gets warm again. If you catch a mouse in the car then you need to be very thorough and inspect the car for any signs of a nest. Look under car on top of underbody or engine panels for any signs of nest trash. The panels should be clear of anything. If anything on panels.... Sincerely, Macster.

POST 9Original post

Quotes source post: 7202635

Loren -- is that code also activated when the switch on the fill tube is disconnected? I'm pretty sure there is a switch there (under the fender liner) that detects if the cap is in place. I feel silly mentioning this after learning so much from you on Renntech.

POST 10Original post

Quotes source post: 7204711

The EPA vapor leak test is run ever time you turn the key to the on position. So, any open lines, seals, or valves would cause a fault.

This is a source reference. Confirm exact model applicability in the original material.