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P0410, P1410 and P1411 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

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YOUR RESEARCHP0410, P1410 and P1411 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Run on a cold start

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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
The air pump will only run on a cold start for about 30-45 seconds.
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P0410, P1410 and P1411 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'Run on a cold start' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run on a cold start' (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.

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1 matching discussions · 4 captured posts examined · 0 partial discussions

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Run when it gets voltage, and the valve operates

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
I've confirmed that the pump is running when it gets voltage, and the valve operates with about 10 in Hg on my vacuum gauge.
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P0410, P1410 and P1411 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed actions (2)

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

Run on a cold start

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 air pump will only run on a cold start for about 30-45 seconds.
Original post Read captured discussion
P0410, P1410 and P1411 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run when it gets voltage, and the valve operates

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
I've confirmed that the pump is running when it gets voltage, and the valve operates with about 10 in Hg on my vacuum gauge.
Original post Read captured discussion
P0410, P1410 and P1411 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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.

986Forum: 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

'99 Boxster w/ 41 k on the clock. I have recently been getting these codes on the CEL. Always P0410, and sometimes in combination with P1410 OR P1411, never both. I have just had the car serviced (< 300 mi.) and it runs fine, so I am thinking not MAF). Sometimes I can go 100 + mi, sometimes the CEL lgos off just a few miles after reset. Last time I "thought" maybe the air pump was not running but I am not positive. Any advice? Thanks, J. Tucker '99 Arctic Silver '98 318ti

POST 2 / ORIGINAL POSTEROriginal post

I cracked the engine compartment open...everything looks ok, when I started the engine the air pump is definitely not coming on. But the engine is not bone cold either. Anyone know how cold the engine need to be for this to operate? Thanks, J. Tucker '99 Arctic silver '98 318ti

POST 3Original post

Although this is an old question I wanted to post a reply just in case someone comes across this question letter on through a search. The air pump will only run on a cold start for about 30-45 seconds. Here's some great instructions to go through the different problems it could possibly be: http://mike.focke.googlepages.com/checkenginelightcausedbymassairflowsensor

POST 4Original post

Hi all, I'm troubleshooting a P0410/P1411 code on my 1999 986, and the troubleshooting instructions are great. One question - does anyone know the vacuum value that the cut-off valve should operate at? I've confirmed that the pump is running when it gets voltage, and the valve operates with about 10 in Hg on my vacuum gauge. However, when I cold-start the car, I'm only reading about 3 in Hg in the vacuum line to it. Maybe my valve is not operating 'easily' enough? Any ideas? My next step is the electric solenoid, but it looks like I'll need a trained octopus to get to it. Thanks, -Michael

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