Question about 1998 Honda Accord

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Key Icon Flashing While Driving

The immobilizer icon in my 01 Honda Civic is flashing while I'm driving. I have all 3 of my keys and it flashes with every one of them. It will randomly turn off but most of the time its flashing. I know that its only supposed to be on for the first couple seconds when you start and turn off your car so I was just wondering if anyone had some insight for me. Thanks!

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Posted on Jun 30, 2009

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2009 HONDA CIVIC THEFT LIGHT FLASHES


You need to have the codes read. If your key has a built in FOB, try changing the battery first. Could be the key,receiver, wiring, or security module.

Aug 20, 2016 | 2009 Honda Civic

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Why is key sign flashing on dash when engine is on 2001 honda civic ex


battery low on keyfob ? as it cant be anything with antitheft or it wouldn't let you drive it away

Mar 10, 2016 | 2001 Honda Civic 1.7

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2001 honda civic a green key displayed


The flashing green key icon when turning off your car? Ignition security system, requires chipped key to start. It's sort of like the GM and Ford flashing red light to announce the security system is active.

Jan 22, 2014 | 2001 Honda Civic

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I replaced the ignition switch module on my 2003 honda civic and now the immobilization system will not let the car start it will crank but thats all I tried turning the key on to the full on position and...


the IMMO light tells you , IMMO is failing,
this is covered in the FSM 100%


rule one , never buy a car with IMMO, baring that, buy the FSM.
this is a complex system, and is unique to this honda.
the book covers this.
see here, for your free book,
http://hondatech.info/downloads/Auto/Manuals/Civic/

i run DIY immo on all my cars and bikes.
costs $1 (and no leash to honda)
honda's do have idle learn modes, up the ying/yang.
1100 pages
your answers are on page 22-165 (FSM)
rule 1, one fob, 1 key on chain or fail.
step 2, does key inserted and on,show key flashing
yes, remove pin 7p and go to step 9
see, it dont work like you think
no 2 cars have the same system. its 2003 honda. and is unique.
7p is in the IGN switch.
etc,etc
and step 14, oops a bad e-parking brake switch , see lamp for same.

Aug 31, 2013 | Honda Civic Cars & Trucks

1 Answer

2001 honda civic grren flashing key....it cranks over but wont start how do i fix this


If there are absolutely no problems of any kind, it may simply be a reminder to remove your key. There's a transponder chip inside the key and it is designed to not allow you to lock your keys in the car. Do you only see the flashing green light when you are stopped and your key is in the ignition?

This is a tricky area to diagnose, if there are any other issues. Have you had any indication of intermittent power, due to your ignition switch? Sometimes, weight from additional keys and from the fob can cause wear in the ignition switch, which can lead to these problems. Also, the main relay may be failing, which provides power to the immobilizer. If you can rule out a problem with the ignition switch, I would try replacing the main relay. Be sure to disconnect the negative battery cable first, after recording any radio codes.

My bet is that it's a reminder to not forget your keys. Check your Owner's Manual.

I hope helps (remember to rate this answer).

Oct 01, 2010 | 2001 Honda Civic

2 Answers

I have green key flashing on dashboard but wont start


Check Fuse #9 under the hood its for DLC Power and Immobilizer System (10 Amp).

Look at the TDC wire harness. Sometimes the wire isnt put back in the holder on the rear edge of the timing cover. Then the harness gets sawed in half by the alternator belt.

Other Honda user had this problem on his 2005 Accord, after letting it sit battery disconnected for 20 minutes it was just fine. Inmobilizer for the lose.

My guess is your immobilizer kicked in because your battery in your key is dead.

So, I dont warranted if this process work...
Here is a better understanding of how a immobilizer works; each key has a code imprinted on it, no battery of any type just a random code. When you go to start the car the immobilizer computer sends a signal to the key. If the signal it receives back from the key matches one of the 5 keys it keeps in its memory, it sends a "OK start" message to the PCM starting the car. If it doesn't see the "OK start" signal it doesn't start and the green key light in the dash flashes. In short there is no way to reset it.

Try another key. If not, there is a way to bypass it shortly to get the car to a Honda dealership for reprogramming of a key or key replacement. Your Prelude may also have a problem with one of these components. It will need to be hooked up to a Honda scan tool and checked for immobilizer codes.Let me know if you have any questions. I'm a 6 year factory Honda tec.

I will try and answer all I can.Here is how to use the "pcm brake code" You weill need to call your local dealership and give them you vin # to get the code.To start the engine, follow this procedure:
1. Cut a temporary key using the key code and anon-transponder key blank.
2. Turn the ignition switch ON (II) with thetemporary key.
3. Enter the first digit of the immobilizer brake codeby pressing and releasing the e-brake pedal the samenumber of times as the digit. For example, if thefirst digit is 4, press and release the e-brake pedal 4 times.
4. Turn the ignition switch to Lock (0) and then backON (II).
5. Repeat steps 3 and 4 to enter the second, third,fourth, and fifth digits of the code. You have up to30 seconds to enter each digit.
6. After you enter the fifth digit, the immobilizerindicator on the dash will blink five times,meaning you can now start the engine with thetemporary key.While the engine is running, the immobilizerindicator will stay on. If the engine isn't started with in 10 minutes, you'll have to reenter theimmobilizer brake code. You'll also have to reenterthe code if the engine is shut off for more than 10 minutes.This also workes for any Honda immobilizer system. However you need to use the brake pedal. Only preludes you used the e-brake.

Good luck.

Nov 13, 2009 | 1996 Honda Civic

1 Answer

I have honda accord 2004 V6 and it wont start this morning. I was getting a green key sign on the dashboard. I tried changing the battery without any luck. Does any one know what is the cause of the...


The Green key Flashing indicates an issue with the immobilizer of the vehicle. This could be a problem with the key being not programmed, or having lost its program. Or this could be an issue with the immobilzer unit, or the part of the ignition switch which reads the key. If the vehicle is cranking with the green light flashing, you will ultimately need the honda dealer computer to program either the key or immobilizer unit.

Jun 20, 2009 | 2004 Honda Accord

1 Answer

Flashing key sensor on and suddenly car turns off


make sure you are not using the valet key. if still goes on take the key to a honda dealer and let them reprogramme the key,. most dealers do it for free.

Feb 17, 2009 | 1998 Honda Accord

1 Answer

Tkey light flashing


This would indicate a problem with the program in your key, advise would to be try your spare key, not the red one. it could indicate a problem with the imobiliser or the key may just need re-programmed. this may happen after a service as usually the key needs updated. best to seek and advice from an independent garage as honda will charge mass amount.



If this solve your query, pls rate

Jan 03, 2009 | 2003 Honda Civic

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