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Codes P2231 & P0301 - 2008 Hyundai Elantra

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Posted on Jan 02, 2017

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SOURCE: My car failed emissions with the following Codes

O2 Sensor in manifold has failed, replace it and have computer reset, hope this helps, let me know

Posted on Jun 03, 2009


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When runing engine has missfire on #1 and#7 cly At ilder or highway speed some time it run with no probem but back fire throw intake and set codes.

DTC P0301 & P0307 Code - Cylinder #1 & #7 Misfire Detected
A P0301 (also P0307) code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1 (also cyl #7).

Symptoms may include the engine may be harder to start, the engine may stumble / stumble, and/or hesitate or other symptoms may also be present. Other tips to solve it in the previous fault code link.

A code P0301 and P0307 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Engine light comes on, code P0301 comes up. Engine runs rough when starting and there is an on and off burnt smell.

A P0301 code means that the the car's computer
has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1.

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My car failed emissions with the following Codes P2626 & P2231. What does the code stand for. My check engine light is on.

O2 Sensor in manifold has failed, replace it and have computer reset, hope this helps, let me know

Jun 03, 2009 | 2004 Hyundai Elantra

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