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Service engine soon light

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Old 08-31-2018, 10:56 AM
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Service engine soon light
i have a 2005 maxima. The service engine soon light is always on. The fault codes display an error with the mass air flow sensor. I have changed the A/F sensor numerous times and cleared the fault codes. The service engine soon light comes back on with an A/F sensor fault again. I have cleaned/changed the air filter and made sure the air ducting is connected.Any suggestions?
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Old 08-31-2018, 12:13 PM
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Originally Posted by Tamburitzan
i have a 2005 maxima. The service engine soon light is always on. The fault codes display an error with the mass air flow sensor. I have changed the A/F sensor numerous times and cleared the fault codes. The service engine soon light comes back on with an A/F sensor fault again. I have cleaned/changed the air filter and made sure the air ducting is connected.Any suggestions?
Have you checked the wiring to the harness/plug? Could be a loose wire. Check the wires for any damage.
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Old 08-31-2018, 12:31 PM
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Wires seem to be in good shape. I also cleaned the contacts. Thank you for your response
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Old 09-02-2018, 01:09 PM
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Originally Posted by Tamburitzan
i have a 2005 maxima. The service engine soon light is always on. The fault codes display an error with the mass air flow sensor. I have changed the A/F sensor numerous times and cleared the fault codes. The service engine soon light comes back on with an A/F sensor fault again. I have cleaned/changed the air filter and made sure the air ducting is connected.Any suggestions?
Are you getting an error for the MAF or A/F? What exactly is the code?
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Old 09-02-2018, 01:44 PM
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Thank you for responding
it changed from MAF to A/F. I did the relearn procedure for the ECU
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Old 09-03-2018, 02:14 AM
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Originally Posted by Tamburitzan
it changed from MAF to A/F. I did the relearn procedure for the ECU
What was the precise code?
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Old 09-03-2018, 04:43 AM
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P0101. MAF sensor replaced. Then p1273. Mixture relearn procedure done. SES light goes out for a few days. Then fault codes above return
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Old 09-03-2018, 05:51 AM
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Check for tiny leaks around the A/F sensor and manifold area.
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Old 09-04-2018, 03:47 AM
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Usually a dirty throttle body will cause this code.
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Old 09-04-2018, 03:57 AM
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Originally Posted by edjose17
Usually a dirty throttle body will cause this code.
I doubt, and any attempt to clean it is most likely to open up fresh issues.
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Old 09-04-2018, 09:24 AM
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Thank you all
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Old 09-05-2018, 04:21 PM
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Throttle body
Would a faulty throttle body cause this problem? I do have a new one I thought about installing
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