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04 mazda 3 giving error code for Mac sensor already replaced still giving code car running lbad what could be wrong that's the only code it's giving

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  • Mazda Master
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Codes have several causes for showing up so post it all again with the code revealed if you want further assistance
posts are not linked

Posted on Apr 17, 2017

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Posted on Jan 02, 2017

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SOURCE: location of O2 sensor in bank 2, 99 5.4 expedition, running lean

I have a ford 2003 windstar that was running very rough when cold and almost stalling. engine light came on. went to autozone and they read the codes for free and told me it was running lean on Bank 2 also. i came home searched for the O2 front sensors online using the info autozone gave me. there are 2 front sensors on my car that need to be replaced at the same time. look for ones that have a direct plug in and don't need wire splicing. the ones without the wiring harness are cheaper but more of a pain, i think.
they were fairly easy to replace. getting access with the wrench was the worst. reset the light by disconnecting the battery for a few minutes. seems fine now and the light hasn't come back on.

Posted on Jan 25, 2009

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SOURCE: Location O2 sensor after cat for Mazda Miata 2002

Just had BOTH of my O2 sensors replaced in my 2002 Miata.  The sensors are located
1. at the back of the engine compartment look down (on the passenger side ) You should see a spark plug looking device near the bottom of the engine (on the side) it has a short wire output that goes to a connector looking device on the other end. This O2 sensor had a short wire connector on the other end
Probably can be replaced from the top.
2.  This one is tougher --- From underneath the vehicle just after the catalytic converter  you should be able to see the Spark plug like O2 sensor .  The person who repaired it for me had to trace the wire from the O2 sensor.  It goes up into ( perhaps the frame or bottom of the vehicle INTO the Driver compartment under the drivers seat.  It is located near the Center Console  right at the carpet seam. It was about in a straight line from the BACK of the Drivers side Car Door.  He felt around -- and located the Connector (under the carpet near the center console. .  He checked underneath the car to the point where the wire disappeared --to confirm he had the correct wire.  
Once he located where the sensor wire led to --He had the old sensor out and wire connector disconnected and a  New sensor and the connector installed in about 10 minutes.  
The O2 sensor for this one was much longer than the first O2 sensor in the engine compartment He had to use some sort of standard release spray on the old sensor itself --to remove the old O2 Sensor.   Since it is exposed to the elements under the car.   Wrench, I think a screwdriver  and the spray were all the tools I remember him using.....

The autozone code indicated only the engine compartment sensor was bad.
The repair man told me Both usually go bad at the same time.  
I fixed the first one only -- turned out the warning light lit up a day or so later indicating the second O2 Sensor under the vehicle was bad.  Fixed that as well -- have had no problems since -- repair was about 4 months ago.....

Posted on May 24, 2009

  • 4 Answers

SOURCE: 1990 oldsmobile 98 error code 34 MAC

There are 2 problems for code 34. First, is manifold absolute pressure(MAP) sensor signal voltage low. Second, Mass Air Flow (MAF)sensor signal-low airflow indicated.I dont have anything for the MAC.Hope this helps

Posted on Jul 06, 2009

  • 98 Answers

SOURCE: 04 mazda 6 lean condition

sounds like you have a vacuum leak. It is sucking in extra air from somewhere. possibly the intake manifold gaskets. The extra air coming in fools the computer / o2 sensors to believe it has a lean mixture then it will try to compensate for the lean mixture and add more fuel.

Posted on Oct 30, 2009

  • 6 Answers

SOURCE: 2000 Daewoo Lanos engine fans run constantly

which temp sensor did you replace the one with one wire is for the gauge on the dash and the one with two wires is for the ecu the ecu controls the cooling fans so if this sensor is faulty the ecu will switch the cooling fans on because it does not know what temperature the engine is at check you have rplaced the right sensor

Posted on Dec 20, 2009

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Mazda 3 won't idle.


code p0 refers to intake air temp sensor --circuit malfunstion causes are wiring open circuit(broken)wiring short to ground bad earth and ECM.
code po113 refers to mass air flow( MAF) sensor/ volume air flow (VAF) sensor --low input. Causes may bewiring short to ground MAF?VAF sensor faulty ECM
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95 Mazda Millenia- P1195 & P1522: I have already replaced the mass air flow sensor all but 2 O2 sensors, and I have replaced the selenoid for the EGR according to the P1195 code problem/solution i


Try a full reset. Disconnect the car battery for about an hour. Reconnect the battery then try it again. Doing a full reset should reprogram the EEC to go back to factory settings. It worked doing this on my Ford. I would suggest it will work on a Mazda.

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04 mazda 6 lean condition


sounds like you have a vacuum leak. It is sucking in extra air from somewhere. possibly the intake manifold gaskets. The extra air coming in fools the computer / o2 sensors to believe it has a lean mixture then it will try to compensate for the lean mixture and add more fuel.

Oct 30, 2009 | 2004 Mazda 6

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Mazda 626 will not start..no spark


Hi,

Offhand, a lot of possibilities that can cause no spark and/or deteriorating performance.
  • possibilities for no spark:
  1. faulty computer;
  2. if it is an automatic transmission, the neutral switch;
  3. if it has an immobilizer tied to the anti theft/security system;
  4. faulty cam and/or crank position sensors;
  5. loose wiring connectors, corroded terminals.
  • possibilities for deteriorating performance:
  1. major tune-up;
  2. restricted, blocked faulty injectors;
  3. clogged fuel filter;
  4. clogged air filter;
  5. engine age.
The correct procedure would be to have the car's computer scanned for the error codes. The error codes would give us a general idea where to begin diagnosis/tests. There are a number of known shops that would do the scanning for free and provide you with the error codes.

Hope this be of initial help/idea. Pls post back with error codes, how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Nov 11, 2008 | 1992 Mazda 626

1 Answer

96 1.5 mazda protege


It just unbolts but I would also clean the mass air flow sensor. This could also cause a TPS code.

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