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code 1128 & 1130

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8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHcode 1128 & 1130

Reported or suspected cause

oxygen sensors

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
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 report identifying 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.

Reported cause · Original poster

I've been told by Autozone the problem is the O2 sensors.

Original post Read captured discussion
code 1128 & 1130
Frequently discussed work

Check intake and vacuum line leaks

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

Check for intake and vacuum line leaks and clean your MAF with electronics cleaner.

Original post Read captured discussion
code 1128 & 1130
Read full discussion summary

Leading evidence: 'oxygen sensors' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'oxygen sensors' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check intake and vacuum line leaks' (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 · 8 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Clean mass air flow sensor

Performed · outcome unconfirmed

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 performed work without a confirmed outcome
1
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

Check for intake and vacuum line leaks and clean your MAF with electronics cleaner.

Original post Read captured discussion
code 1128 & 1130

Suggestion

You may want to take the MAF out and clean it, it is easy.

Original post Read captured discussion
code 1128 & 1130

Performed · outcome unconfirmed

I have cleaned the MAF but the codes keep returning after 3 weeks or so.

Original post Read captured discussion
code 1128 & 1130

Replace me maf and threw out my old one

Performed · outcome unconfirmed

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 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

They replaced me MAF and threw out my old one.

Original post Read captured discussion
code 1128 & 1130

Check intake and vacuum line leaks

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

Check for intake and vacuum line leaks and clean your MAF with electronics cleaner.

Original post Read captured discussion
code 1128 & 1130

Clean tomorrow

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 · Original poster

I'm going to start cleaning tomorrow.

Original post Read captured discussion
code 1128 & 1130
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.

Check intake and vacuum line leaks

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

Check for intake and vacuum line leaks and clean your MAF with electronics cleaner.

Original post Read captured discussion
code 1128 & 1130

Clean mass air flow sensor

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
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

Check for intake and vacuum line leaks and clean your MAF with electronics cleaner.

Original post Read captured discussion
code 1128 & 1130

Suggestion

You may want to take the MAF out and clean it, it is easy.

Original post Read captured discussion
code 1128 & 1130

Performed · outcome unconfirmed

I have cleaned the MAF but the codes keep returning after 3 weeks or so.

Original post Read captured discussion
code 1128 & 1130

Clean tomorrow

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'm going to start cleaning tomorrow.

Original post Read captured discussion
code 1128 & 1130

Repair shop

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 got screwed at my repair shop for the same thing you are having but I spent $1200.00 for nothing.

Original post Read captured discussion
code 1128 & 1130

Replace me maf and threw out my old one

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

They replaced me MAF and threw out my old one.

Original post Read captured discussion
code 1128 & 1130

Reset ecu and it was fine

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 removed the entire intake, cleaned it, reset the ECU and it was fine.

Original post Read captured discussion
code 1128 & 1130

Run k&n your problem is

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

Also if you are running a K&N your problem is that.

Original post Read captured discussion
code 1128 & 1130

Run too lean

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

Thos codes are reporting that your engine is running too lean.

Original post Read captured discussion
code 1128 & 1130
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.

oxygen sensors

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying 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.

Reported cause · Original poster

I've been told by Autozone the problem is the O2 sensors.

Original post Read captured discussion
code 1128 & 1130
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.

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

  • Rennlist: 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: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Greetings: My car, 2000 C4 keeps throwing these codes, 1128 and 1130. I cleared the codes about 2 weeks and the codes came up again. I've been told by Autozone the problem is the O2 sensors. Has anyone else had this problem before, and what did you do to correct it? thanks

POST 2Original post

Extremely unlikely you need O2 sensors. Thos codes are reporting that your engine is running too lean. Both banks on the engine. This can be casued by many things including vacuum leaks, intake leaks and exhaust leaks and dirty MAF. Other causes might be fuel pump problems or clogged njectors but that is unlikely. Check for intake and vacuum line leaks and clean your MAF with electronics cleaner.

POST 3 / ORIGINAL POSTEROriginal post

thanks for your reply. I need to take my car thru Md emissions by the 19th of this month. Will these codes cause me to fail emissions?

POST 5Original post

You may want to take the MAF out and clean it, it is easy. There is a servo on the butterfly that modulates the intake at idle that also needs cleaning. I got screwed at my repair shop for the same thing you are having but I spent $1200.00 for nothing. They replaced me MAF and threw out my old one. I started up the car and got the check engine light again. I removed the entire intake, cleaned it, reset the ECU and it was fine.

POST 6Original post

Also if you are running a K&N your problem is that. The oils in it kill the MAF.

POST 7 / ORIGINAL POSTEROriginal post

thanks again for your replys. I'm going to start cleaning tomorrow.

POST 8Original post

I am having the same problem on my 99 C4. I have cleaned the MAF but the codes keep returning after 3 weeks or so. I have also notice a gasoline smell for time to time too. Where is this butterfly located at?

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