Q: Went got a test at Autozone for alternator, she stated everything test normal but battery voltage is too low? What does that mean?

asked by on

Went got a test from autozone for my alternator! When she ran the test she stated everything us normal bur read battery voltage is too low! What does that mean? Do ii need a new battery or alternator?

My car has 17800 miles.
My car's transmission is unknown to me.

Hello. This could mean the alternator is not charging the battery high enough or the battery will not accept and hold a charge. You may need to replace the battery first, then recheck the alternator charging system for proper operation. If you need help, an expert from YourMechanic can come to your home or office to inspect why your battery does not hold a charge and replace the alternator if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Went got a test at Autozone for alternator, she stated everything test normal but battery voltage is too low? What does that mean?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Not running gauges

Wow, there is a lot to do here! For the temperature gauge - check the sensor for temperature appropriate resistance, proper wiring and ground connections to the gauge. Yes, speed sensitive wipers were available on this model. As for...

Q: Q: Battery not staying charged

Hello. The battery is basically a storage device that requires constant charging from the alternator. I would have your alternator tested. If the alternator is not the problem, I would check for a parasitic draw. This happens when something in...

Q: Car shutting off in the middle of driving

Hello. The first thing that I would suggest that you do is have an inspection of the electrical charging system completed. It is possible that the alternator is working intermittently. There are brushes inside of the alternator that conduct electricity....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...