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Engine voltage light came on. what do i need to do?

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Generally speaking, the battery warning light means the alternator is not charging the battery. The charging system would need to be checked.

Posted on Jul 26, 2013

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Posted on Jan 02, 2017

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Car failed inspection,bulb was gone for check engine light. put new bulb in,has voltage but the Check Engine light on dash wont come on.


Probably won't pass. The light MUST come on when key is turned to on, or else something is wrong-maybe the engine computer or maybe the wire from pcm to the diagnostic connector or to the dash.
Now I see you say the bulb has voltage? May need to look into possible fault with the pcm.

Mar 05, 2017 | Nissan Cars & Trucks

1 Answer

How does the vsc+trc and engine check light on


vehicle stability control and traction control work together so if one turns on the other usually turns on at the same time, the fact the engine light turned on as well makes me think it could be a voltage issue. possibly weak battery. tsc and trc are very sensitive to voltage changes and so are emission control on the engine. so in theory the low voltage would cause all three light to turn on. a generic drb2 would be able to scan the engine light code, so if it has anything pertaining to voltage I am sure that would be your problem

Apr 24, 2014 | 2007 Chrysler Town & Country LX New Cars

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PO106 check engine on Kia Forte after battery died


did you check that battery is charging with a multi meter ? could be that your alternator has a fault . Icheck battery voltage with engine off and running , voltage should be approx. 12.48v with engine off and around 14v running . if no increase in voltage when running brushes in alternator will need replacing .

Mar 28, 2014 | 2010 Kia Forte

2 Answers

What would be the reason my battery light and check engine light is on?


SOUND LIKE ALTERNATOR FAULTY.IF ALTERNATOR BAD IT WILL CAUSE CHECK ENGINE LIGHT AND BATTERY LIGHT TO FLASH.REASON CHECK ENGINE LIGHT FLASH YOUR ALTERNATOR OUT PUT VOLTS LOWER THAN 13.0 VOLTS.CHECK ALTERNATOR FUSE, DRIVE BELT MAKE ALTERNATOR ELECTRICAL WIRES IN TACT NOT LOOSE OR DAMAGED.

Sep 20, 2011 | 2005 Dodge Stratus

1 Answer

03 Mazda Tribute's charging indicator light begins flashing on and off when engine reaches 1200 rpm and becomes contineously on at and above 1500 rpm. With engine idling or decelerating to below 1200 rpm...


It may be that the light is being tripped due to an "over voltage" condition. The faster you spin the alternator/engine the higher the voltage output of the alternator. I would test the voltage coming out of the alternator. It should be at about 14.3v or so max. If it gets into the 16v+ range when you increase the engine RPM then the voltage regulator has failed and needs to be replaced.

Feb 03, 2011 | 2003 Mazda Tribute

1 Answer

Battery light is on. i changed the battery and altinator


If the battery light is on, this is an indication tha the generator is not working.
A simple check of the generator is to measure the voltage over the battery in 2 steps. The battery voltage - engine not running = 12VDc
voltage - engine running = around 14.2VDc or defenately higher than the voltage in situation where the engine is not running.

If the generator is is ok the voltage measured over the battery wil increase as a result of charging.

If no increase of voltage - charger defective - or eventually poor cable connections between the charger unit and "the engine".

Jan 21, 2011 | 1999 Suzuki Grand Vitara

1 Answer

Battery light is on


the battery light coming when the engine is running usually indicates that the alternator is not charging, you need to check the voltage in the battery when the engine is running,it should be between 13.8 & 14.3 volts,the alternator or the voltage regulator may be faulty & needs replacing.....hope this helps.....cheers

Aug 08, 2010 | 1996 Ford Taurus

2 Answers

Battery light comes on and off, changed battery cleaned all connections light still comes on and off


Battery light is a signal from the alternator that charge is below a given voltage , check charging system.

Oct 24, 2009 | 2000 Ford Focus

4 Answers

Code PO131


Code PO131 is O2 sensor circuit low voltage , bank 1, sensor 1. That sensor I would say is the one in the exhaust manifold. I would check voltage to the sensor from the computer. If the voltage is not 5 volts, then it could be a computer problem or a wiring problem. I have seen factory wiring and connectors give a voltage problem. Check for a damaged or burnt, pinched wire. You need to know for sure that the voltage is correct to the sensor. Intermittent problems are hard to trace , but patience and knowledge helps.

Mar 11, 2009 | 1999 Honda Civic

2 Answers

1997 toyota 4-runner, My battery dash light is on. The battery is good.


The battery light on at the dash indicates a problem internal in the alternator. Normally, when the alternator is producing sufficient voltage (14.4 VDC), the light stays off. When the alternator is NOT producing sufficient voltage, the light comes on. Check the voltage at the battery with a voltmenter with the engine running. If you have less than 12 volts, you both need an alternator.

Aug 09, 2008 | 1996 Toyota 4Runner

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