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1998 Porsche Boxster Error Code: P0717, P0722, P0455

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH1998 Porsche Boxster Error Code: P0717, P0722, P0455

Leading reported evidence

Check connections

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 EVAP leak is a matter of tracing lines, checking connections, and testing the various valves in the system.
Original post Read captured discussion
1998 Porsche Boxster Error Code: P0717, P0722, P0455

Read full discussion summary

Leading evidence: 'Check connections' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check connections' (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 · 4 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace however i didn't get a chance

Suggestion or failed attempt

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 was going to get it replaced however I didn't get a chance to yet.
Original post Read captured discussion
1998 Porsche Boxster Error Code: P0717, P0722, P0455

Test various valves in the system

Suggestion or failed attempt

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 EVAP leak is a matter of tracing lines, checking connections, and testing the various valves in the system.
Original post Read captured discussion
1998 Porsche Boxster Error Code: P0717, P0722, P0455

Frequently discussed actions (3)

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

Check connections

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 EVAP leak is a matter of tracing lines, checking connections, and testing the various valves in the system.
Original post Read captured discussion
1998 Porsche Boxster Error Code: P0717, P0722, P0455

Replace however i didn't get a chance

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 was going to get it replaced however I didn't get a chance to yet.
Original post Read captured discussion
1998 Porsche Boxster Error Code: P0717, P0722, P0455

Test various valves in the system

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 EVAP leak is a matter of tracing lines, checking connections, and testing the various valves in the system.
Original post Read captured discussion
1998 Porsche Boxster Error Code: P0717, P0722, 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.

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

Pelican Parts: 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: 20261026T212127Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So, I recently bought a 1998 Porsche boxster automatic. I was driving it and the check engine light turned on after a couple days. The error code was P0455 which was an evap leak, and I was told its still okay to drive it. I was going to get it replaced however I didn't get a chance to yet. As I was driving yesterday, all of a sudden the red light was flashing from drive (D) to the gear (4) back and forth. I then lost all acceleration control and it seemed like no power was going to the wheels, and I was stuck in neutral or first gear. I forced it up a hill to park it somewhere safer, and then the error codes P0717 and P0722 showed up. I did some research on what these error codes display which have to do with the input and output to the computer. It might be able easy fix of the sensor or it might be even more major. As a person that tries to save money I was hoping I could find some advice or anyone that could help me with any suggestions on what I should do. I got the car towed to my house and now it is parked in my garage.

POST 2Original post

P0455 is an easy one, it is a vacuum leak in the EVAP system on the fuel tank. P0717 and 0722 are more troublesome; 0717 indicates that the difference between the actual input speed of the transmission and the calculated input speed from the input sensor is out of range. P0722 is a similar condition on the transmission output speeds. You have Tiptronic control system issues.

POST 3 / ORIGINAL POSTEROriginal post

is it possible to fix it myself? if so how do i know where the leak is and what part to replace? Thank You!

POST 4Original post

The EVAP leak is a matter of tracing lines, checking connections, and testing the various valves in the system. The Tip problems is going to take somewhat more equipment and knowledge.

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