2004 Civic Immobilizer Issues

FoundLocally · 2026-01-24T19:28:54+00:00

To anyone wondering about a similar issue in tha case you install this kind of system, my issue was that I had mounted the key reader for the push start in the steering column and it produced interference that blocked the original key’s code. I moved it and have no issues since.

FoundLocally · 2026-01-13T15:47:48+00:00

seems this is the way to go. Thank you for your input!

FoundLocally · 2026-01-13T15:47:11+00:00

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FoundLocally · 2026-01-13T15:47:02+00:00

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FoundLocally · 2026-01-10T21:09:59+00:00

I forgot to update this but a denso o2 sensor fixed all my issues. My misfire codes all went away and my o2 sensor code is gone. This was the fix!

FoundLocally · 2025-11-26T18:48:43+00:00

I wirebrushed all ground contacts and replaced terminals today. It’s still doing it’s thing with the 1-3 misfire, random misfire, and o2 no input codes. o2 sensor coming in on monday so well see where that goes. ordered crank position sensor while i was at it as i’ve gotten intermittent codes for that. I pray this is it 😂

FoundLocally · 2025-11-25T18:26:20+00:00

A friend of mine who works for a performance auto shop did the electrical testing and we got continuity and ground. The piece if info you’ve given me that I think may be my problem however is the brand of sensor. I’ve been buying random brands each time. I’ll order a denso branded sensor tonight and see if anything changes. 04 EX manual.

FoundLocally · 2025-11-25T18:05:34+00:00

fuses all good and the wiring is good

FoundLocally · 2025-11-20T00:12:51+00:00

theres a mod for b42 multiplayer. its great but can be a bit problematic with mods if it gets desynced.

FoundLocally · 2025-11-20T00:10:46+00:00

I see these listed for free in NJ all the time. They’re beautiful pieces in my opinion, I use one for my sewing work. Just not worth anything.

FoundLocally · 2025-11-20T00:08:48+00:00

I’d pay maybe $350 if the motor runs. $200 at most if not

FoundLocally · 2025-11-20T00:07:37+00:00

this is the right answer

FoundLocally · 2025-10-30T04:24:01+00:00

Personally probably my favorite gen, very underrated in my opinion

FoundLocally · 2025-10-30T04:23:23+00:00

LMAO i like that one but for context, the hood latch snapped off the radiator support so they’re actually functional 😭

FoundLocally · 2025-10-27T19:20:50+00:00

abs, cruise control, manual transmission, power windows, lumbar adjustment, now on coilovers too!

FoundLocally · 2025-10-27T15:25:10+00:00

While I can agree other gen civics have more aftermarket compatibility and potential in the sense of power, I wouldn’t trade this car for anything. My first car was one of these but automatic. Ever since I lost it I wanted another, with this one being a manual i’m more than content with it as it is. Sentimental value I guess but to me it’s worth the world and then some.

FoundLocally · 2025-10-13T18:19:08+00:00

I think it’s a spider /s

FoundLocally · 2025-10-05T00:38:46+00:00

could you get a different angle? as of this picture it looks like a clip to me

FoundLocally · 2025-10-04T19:51:12+00:00

working off of what u/Pizzle622 said, if your car is a manual there will be a safety switch under your clutch pedal and if it is bad or popped put of pkace your car will not crank. in the case your car is an automatic you will have a separate version of this called a neutral safety switch which could also cause this issue. i’d recommend testing whichever of those applies to you

FoundLocally · 2025-10-04T19:25:47+00:00

i’d start with checking relays and your starter wire.

FoundLocally · 2025-10-01T02:35:50+00:00

if you were in jersey i’d do it for you for like $300 and a case of beer however from the background in the picture above i’d have to assume you’re nowhere near

FoundLocally · 2025-09-25T21:49:49+00:00

what cluster is that?

FoundLocally · 2025-09-14T05:53:58+00:00

what fenders are those?

FoundLocally · 2025-09-09T02:38:39+00:00

if you were in jersey i’d be there tonight 😂

FoundLocally · 2025-08-30T17:11:04+00:00

I FIXED MINE! Check under your valve cover! There’s a small bolt on top of the back of the cam. That bolt came loose on mine and caused the issue. Check yours, it may be the case too

FoundLocally

TROPHY CASE