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Need help with trouble codes. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHNeed help with trouble codes. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace two 02 sensors

Performed · outcome unconfirmed

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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 performed work without a confirmed outcome: 1

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

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Performed · outcome unconfirmed · Original poster
I just replaced two 02 sensors after the cats because of codes the car was giving me.
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Need help with trouble codes. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'Replace two 02 sensors' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace two 02 sensors' (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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Frequently discussed actions (1)

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

Replace two 02 sensors

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed · Original poster
I just replaced two 02 sensors after the cats because of codes the car was giving me.
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Need help with trouble codes. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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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.

2 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: 20261027T044418Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

The car is a 97 Boxter with around 116k miles. I just replaced two 02 sensors after the cats because of codes the car was giving me. Now after a weekend trip and a couple hundred miles the check engine light reappears and is giving me the following codes. P1411 Secondary Air Injection Cyl 4-6 P1121 O2S heater 2 behind cat. converter Cyl. 1-3 P1117 O2S Heater 1 Behind cat converter 1-3 P1126 O2S Sensing Range 1 Cyl. 4-6 Thank you for any help provided. The car seems to be running fine so no noticable problems from driving, but I would like to take care of any issues.

POST 2Original post

P1121 is for the throttle position sensor. For the P1117 code, the heater could be bad, or the wiring/connector could have problems -- start with this code first. Check the resistance of the bank 2 downstream sensor's heater and compare it to the bank 1 sensor that's throwing the code for starters. The P1411 and P1126 are possibly related since the SAI air volume is measured by the O2 sensors. Start chasing down all the SAI components with the pump being first (it's the easiest) by disconnecting it and checking the resistance of the pump (should be no more than 1-2 ohms). Also, I sent you a PM. Regards, paul...

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