HOW TO FIX TROUBLE CODE P1133

1999 CHEVROLET BLAZER
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ALSMILEZ
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The check engine light is on with code P1133
Oct 20, 2011 at 10:32 PM
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MHPAUTOS
  • CAR REPAIR CONTRIBUTOR
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This code is because the engine is misfiring or has a large vacuum leak here are two guides to help fix it.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

and

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please run down these guides and report back.
Oct 27, 2011 at 12:27 PM
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KISSAB16
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Thank you for this post I followed the guides and found #3 cylinder had a cracked spark plug so I did a full tune up and cleared the codes all fixed! I love this site.
Jun 11, 2019 at 12:24 PM
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SABERS24
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poup the code p1133 and we dont know what it means.
Jun 11, 2019 at 12:24 PM (Merged)
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
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That is a code for the bank 1 heated oxygen sensor isn't responding. Either you have a wiring issue, a bad connection, or the sensor is bad.
Jun 11, 2019 at 12:24 PM (Merged)
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.