Question about Uniden TRU9488 Phone

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E4 error code

My phone is dead. I keep getting an E4 error code on the LCD display - what does this mean?

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Re: E4 error code

I called Uniden about the same problem.  They say it is a code that means it is defective base unit.  I had purchased it within one year and they will gladly send me a new one.  I don't know if they will offer anything beyond the one year mark. 

They say it was a spike in the power lines that causes this error. 

Posted on Oct 25, 2007

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Re: E4 error code

How do I reset base and make phone usable again?

Posted on Oct 02, 2008

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Phone flashing 88 8 now flashing e4 cannot get dial tone.

Your manual may have the E4 code, but Uniden certainly will, if you contact their support site. This symptom often indicates a power or function issue with the base unit, and so make sure the base has charging voltage, and the terminals are clean (use a qtip and alcohol). When you contact Uniden Support, have your model number ready, since different units can have the same or different error codes programmed into them.
Good luck, and hope this helps.

May 19, 2011 | Uniden Cordless Phone

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E4 Error is showing on Uniden 5.8 GHz expandable phone. Power may have been disconnected. An ideas on a solution?

The handset displaying the message may have lost its memory of the base station. Take it over to the base station and reset it as when you first associated the handset with the base.

I hope this helps.

Cindy Wells

Jan 10, 2010 | Uniden TRU9480 Cordless Phone

2 Answers

Uniden power max 5.8 it says E4 wont work any help

After a power outage I receive an E4 error on my Uniden PowerMax 5.8GHz base unit. Is this broke beyond repair? Or, is there some sort of reset to get the phone working again?

Jun 19, 2009 | Uniden Phones

1 Answer

E4 error message

I have the same problem. Want to buy a new one, but would like to know if this can be fixed.

Apr 04, 2009 | Uniden TRU9485 Cordless Phone

1 Answer

E4 trouble condition comes up on screen after power up

Error #4, You probably need to reset the phone by unplugging the main unit from the power source then plugging it back in abd re registering the handsets by setting them in the main cradle for about 10 seconds each. if this doesn't work try the manual if you have it still and see what E4 error means. Good Luck. Sometimes with electronics all you need to do when they wont work is unplug then and plug them back in while holding the power button on. This is amazing trick that no one wants anyone to know about. it works great on VCR's and DVD players.

Feb 11, 2009 | Uniden Cordless Phone

1 Answer

Base unit displaying E4 after we experienced a power black out

e4 error code that means it ihas defective base unit. it happened due to a spike in the power lines that may cause this error

Feb 09, 2009 | Uniden 5.8GHz Cordless Phone

1 Answer

E4 code on base station

i know that you dont want to hear this but that means it must be replaced. you should be able to get a replacment form where you purchased the phone

Dec 29, 2008 | Uniden TRU9480 Cordless Telephone

1 Answer


Customer support 1 800 297-1023 told me that this means the base unit is defective and can't be repaired. I also was told that none of my remote units are compatable with other models.

Sep 26, 2008 | Uniden TRU9480 Cordless Telephone

2 Answers

E4 error code

Exact same problem. E4, sent uniden an email thru their website though I doubt Ill hear any response. Very disappointed as the 9485 was working great until all of a sudden E4 showed up.

Nov 29, 2007 | Uniden TRU9485 Cordless Phone

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