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YOUR RESEARCHThoughts please on CEL w/ P1130 - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Replace couple weeks ago
Performed · outcome unconfirmed
No successful repair reported for this finding.
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Performed · outcome unconfirmed · Original poster
I just had my spark plugs and tubes replaced a couple weeks ago.
Thoughts please on CEL w/ P1130 - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work
Adjust limited amount and the p1130 cel code says
No successful repair reported for this finding.
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Discussions that contain suggestions
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Suggestion
However the ECU can only adjust a limited amount and the P1130 CEL code says that the ECU has reached the maximum limit for the amount of fuel that it can add and the mixture is still low on fuel.
Thoughts please on CEL w/ P1130 - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary
Leading evidence: 'Replace couple weeks ago' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust limited amount and the p1130 cel code says' (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.
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
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Performed · outcome unconfirmed · Original poster
Cant remember last time I changed stock air filter.
Thoughts please on CEL w/ P1130 - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Adjust limited amount and the p1130 cel code says
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
However the ECU can only adjust a limited amount and the P1130 CEL code says that the ECU has reached the maximum limit for the amount of fuel that it can add and the mixture is still low on fuel.
Thoughts please on CEL w/ P1130 - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Clean injectors
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Thoughts please on CEL w/ P1130 - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Clean mass air flow sensor
Suggestion or failed attempt
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Suggestion
Start by clearing the code and cleaning the MAF sensor.
Thoughts please on CEL w/ P1130 - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (8)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Adjust limited amount and the p1130 cel code says
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
However the ECU can only adjust a limited amount and the P1130 CEL code says that the ECU has reached the maximum limit for the amount of fuel that it can add and the mixture is still low on fuel.
Thoughts please on CEL w/ P1130 - 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.
12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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Generation: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So I pushed it hard 110-120 highway, came home and the CEL came on. Retightened the gas cap and went to fill it up with gas. Got it coded with P1130 and cleared. Drove home and the CEL has not come back.
Things ok or do I expect it to come back? I purchased a new gas cap just in case...
Thank you for your thoughts in advance.
I've done nothing to it. Cant remember last time I changed stock air filter. Prob good time to do so? The CEL not on anymore but I only drove 5 miles after it was cleared.
It has nothing to do with the gas cap.
P1130 is a lean condition at idle on bank 2.
since it's only on bank 2, it's probably just dirty injectors, try a cleaning product.
Cleaning product? How do you clean injectors.
I just had my spark plugs and tubes replaced a couple weeks ago. Any coincidence ?
Sorry for my car ignorance....
OK googled it. It seems too complicated for me to do myself.
P1130 = Oxygen Sensing Adaptation, Idle Range, Bank 2 - Above Limit
A lean condition is when the air/fuel mixture is low on fuel. The MAF senses the amount of air going into the engine and the O2 sensors sense the combustion gases (air/fuel mixture) in the exhaust.
If the O2 sensors detect that the air/fuel mix is off-nominal, then the ECU tries to compensate for this by injecting a little more fuel to bring the mixture back to normal. However the ECU can only adjust a limited amount and the P1130 CEL code says that the ECU has reached the maximum limit for the amount of fuel that it can add and the mixture is still low on fuel.
This can be caused by a faulty MAF (which is providing a faulty air reading) or an air leak (which is allowing additional air into the system) or a faulty injector (which is injecting the incorrect amount of fuel).
This has nothing to do with the gas cap. Best thing to do is clear the code (as you already have) and see if it comes back.
I think when Ben006 said to use a cleaning product, he meant that you should try using something like Techron. You pour it in with a full tank of gas and it should slowly clear out the injectors.
There are lots of products that are supposed to do the same thing. I'm sure others will chime in with their favorite...
The stone, thank you so much for a through explanation. Makes a lot of sense.
Bird, thank you for a layman info that makes me happy to hear.
I think I can pure something into the gas tank
Thank you very much everyone for your in depth responses and the education. I will update if it comes back.
