Beep Noise??????? 02 Maxima

[Zagginzeed87t]

Hello Ladies and Gents,I'm new to this forum, wanna say thanks for having me! I'm a proud owner of a 02 Maxima purchased new when it came out. The issue I'm having is upon entry/starting the vehicle, I'm getting this "Beeeep" sound coming from my radio. Sometimes it will beep again for no reason afterwards. Is this a warning beep? I do have a check engine light on and had that checked out, its the 02 sensor. If anyone can help out and point me in the right direction that'll be great! Thanks in advance and for look'n

P.S. I know its coming from the radion because I can hear it coming from the speakers and not the dash...thanks

[Infinitiguy19]

Well easiest and maybe cheapest fix would be to replace the radio or to track down any possible bad wires (Shorts). You will need the service manual: http://Nicoclub.com/FSM. But I really think there maybe something wrong with the radio internally. Try calling one of our car stereo repair sponsor and see what they say.

[Zagginzeed87t]

I do plan on replacing the whole unit itself....but there is nothing wrong with it as of right now. Just a concern if its a warning beep that applies to the vehicle and not the radio. Thanks for replying!

[loystock]

As for the Check Engine Light, you need to get the exact fault code to know which O2 sensor is involved. AutoZone provides free diagnostic. The are 4 O2 sensors in your car. Once you have identified which O2 sensor is failing, then use the thread below to fix the problem. It includes illustration showing location of O2 sensors, description of sensor assembly and where to buy quality O2 sensors.

zerothread?id=120838

You need to replace the O2 sensor ASAP. Otherwise, your car will be running 'rich' which can eventually damage your catalytic converter (OEM part is very expensive).