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Mazda 6 GJ engine light on suddenly with a little jerk


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ros2331989
User

Jul 31, 2013, 10:43 PM

Post #1 of 7 (1760 views)
Mazda 6 GJ engine light on suddenly with a little jerk Sign In

New Mazda 6 GJ model engine light comes after a few kilometers of drive with a very little jerk. Also it losses the power, very less acceleration after the engine light has illuminated in the cluster.

Many Thanks


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 1, 2013, 1:08 AM

Post #2 of 7 (1749 views)
Re: Mazda 6 GJ engine light on suddenly with a little jerk Sign In

Sooooo, Get the codes read,

T



ros2331989
User

Aug 1, 2013, 1:12 AM

Post #3 of 7 (1745 views)
Re: Mazda 6 GJ engine light on suddenly with a little jerk Sign In

Sorry forgot to mention, codes present.

They says that Fuel rail pressure sensor malfunction. How can I approch to the issue?

Many Thanks


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 1, 2013, 2:54 AM

Post #4 of 7 (1744 views)
Re: Mazda 6 GJ engine light on suddenly with a little jerk Sign In

We need exact code numbers, not someone's interpretation of what they think it means.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ros2331989
User

Aug 1, 2013, 5:21 AM

Post #5 of 7 (1736 views)
Re: Mazda 6 GJ engine light on suddenly with a little jerk Sign In

the codes were P0191 and P0171

P0191 - related to the fuel rail pressure sensor
P0171 - related to the system is too lean

Thanks


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 1, 2013, 6:27 AM

Post #6 of 7 (1731 views)
Re: Mazda 6 GJ engine light on suddenly with a little jerk Sign In

Those codes mean the computer is having a problem reading the fuel rail pressure sensor, probably causing it to lean out the mixture drastically and causing the lean code.

This can be a problem with the sensor itself, any and all related wiring or the computer itself and it needs to be diagnosed properly to determine the cause



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ros2331989
User

Aug 1, 2013, 7:34 AM

Post #7 of 7 (1728 views)
Re: Mazda 6 GJ engine light on suddenly with a little jerk Sign In

The engine light comes with a jerk, (leaning the mixture) and after it came the engine losses its power obviously. We tried DTC again after a road test, but this time only P0191 showed up.






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