Pelican Parts

Fault Codes P0442, P0445

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHFault Codes P0442, P0445

Reported or suspected cause

source of the leak

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

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 suspect a cause: 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.

Suspected cause
You didn't give the year and model, which is always helpful in these things, but I will take a shot at it: P0442 is the code for a small leak in the fuel ventilation system; P0445 is for the failure of your EVAP system purge valve, which is probably the source of the leak.
Original post Read captured discussion
Fault Codes P0442, P0445

Frequently discussed work

Clean throttle body and maf sensor

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
Clean throttle body and Maf sensor.
Original post Read captured discussion
Fault Codes P0442, P0445

Read full discussion summary

Leading evidence: 'source of the leak' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'source of the leak' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Clean throttle body and maf sensor' (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.

Read captured replies

1 matching discussions · 3 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Clean throttle body and maf sensor

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
Clean throttle body and Maf sensor.
Original post Read captured discussion
Fault Codes P0442, P0445

Fill gas tank

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
Having trouble filling my gas tank to the top.
Original post Read captured discussion
Fault Codes P0442, P0445

Test bleeder valves and how

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
Can I test bleeder valves and how?
Original post Read captured discussion
Fault Codes P0442, P0445

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.

Clean throttle body and maf sensor

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
Clean throttle body and Maf sensor.
Original post Read captured discussion
Fault Codes P0442, P0445

Fill gas tank

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
Having trouble filling my gas tank to the top.
Original post Read captured discussion
Fault Codes P0442, P0445

Test bleeder valves and how

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
Can I test bleeder valves and how?
Original post Read captured discussion
Fault Codes P0442, P0445

Reported and suspected causes (1)

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

source of the leak

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect a cause: 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.

Suspected cause
You didn't give the year and model, which is always helpful in these things, but I will take a shot at it: P0442 is the code for a small leak in the fuel ventilation system; P0445 is for the failure of your EVAP system purge valve, which is probably the source of the leak.
Original post Read captured discussion
Fault Codes P0442, P0445

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.

3 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: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

My duremetric states fault codes are Leaks detected in Fuel system. Is it recovery vapor system? If so where do I start testing. Gas cap seal is good. Having trouble filling my gas tank to the top. Car will stall every now and again. Throwing fault codes. Clean throttle body and Maf sensor. No vacuum sound when opening gas cap. Seal is new. Can I test bleeder valves and how? Thanks Vin

POST 2Original post

Quotes source post: 9711260

You didn't give the year and model, which is always helpful in these things, but I will take a shot at it: P0442 is the code for a small leak in the fuel ventilation system; P0445 is for the failure of your EVAP system purge valve, which is probably the source of the leak.

POST 3 / ORIGINAL POSTEROriginal post

Thank you for the reply. 2003 Porsche 911 Carrera 4 Cab. with a 996 engine. P code info is greatly appreciated. Will look into replacing this. You where very helpful. I hope this resolves my issue. Thanks Vin

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