Alternator Voltage issue

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Feb 19, 2022

rkravetz

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Alternator Voltage issue

Hi,

I have Honda Civic Hatchback 2013 9th gen 1.8L
95K km

Measuring the voltage at the battery/alternator while the engine is running shows me approx. 12.5V (checked it with two different voltmeters)
I don't have any light indicators or any other issues, my battery is almost 2 years old.

Is it normal or is there a problem with it?

Other than replacing the voltage regular is it possible that there is a problem with a different part?

Thank you for your help.

Roman.

Feb 19, 2022

FRSam

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Re: Alternator Voltage issue

With the engine running, it should show ~14.3 volts. This means the car is most likely running off the battery and the alternator is failing/has failed.

Feb 19, 2022

Colin42

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Re: Alternator Voltage issue

Could be the computer doing that to increase fuel mileage, the older cars did that.
try turning the lights, fan, AC on and see if the voltage jumps up

Feb 25, 2022

rkravetz

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Re: Alternator Voltage issue

Quote:

Originally Posted by Chezboat24

With the engine running, it should show ~14.3 volts. This means the car is most likely running off the battery and the alternator is failing/has failed.

Thank you for your comment.

Quote:

Originally Posted by Colin42

Could be the computer doing that to increase fuel mileage, the older cars did that.
try turning the lights, fan, AC on and see if the voltage jumps up

Thank you sir, you saved me some headache and a lot of money.