2004 civic immobilizer issue help!!
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2004 civic immobilizer issue help!!
Went to pass a semi the other day and my car is a automatic as soon as it attempted to downshift to pass it went to limp mode and will not exceed 52mph. And I have to manually shift it from d2 to d3. The green key light flashes on and off; also I had it go off and the car drive normal for maybe 5 minutes. Please any help appreciated!
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Re: 2004 civic immobilizer issue help!!
Someone left the alternator loose? Tighten all of the bolts holding the alternator on, see if problems persist.
If the bolts are found to be properly tightened, check all engine and trans grounds.
If the bolts are found to be properly tightened, check all engine and trans grounds.
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From: MURICA
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If you are lucky the PCM hasn't been burned up by the loose bolt. Currently they are on national backorder with only 2 anywhere in the US at dealers and 1 of those is en route to me for a dead car.
Honda really needs to get their supply caught up.
Honda really needs to get their supply caught up.
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Caught up?? Might want to consider with a 2004, that in just a few years, pretty much parts unless they carry on in newer car years less then 10 years old will be dropped totally by Honda. 10 years is all they are required to make them.
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Ecu is fried! I can only assume. Tightened the bolt up and still same result. One question to get my new ecu programed do I need both keys because I only have one key
If you think a good mechanic is expensive, try hiring a bad one
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From: Midwest. Aiming about mid-chest
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If you find other keys later on, the immobilizer probably won't recognize them and they would need programmed to the car again.
What can happen to the hard parts if the alternator was left loose for too long...bolt worn away, alternator was running crooked, bolt threads stripped out of the bracket and bolt, lower bracket broke in half....PLUS the PCM is fried.
(I'd never seen the lower bracket broken in half before this one)
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From: MURICA
Rep Power: 143 Re: 2004 civic immobilizer issue help!!
And then there was one....
I posted earlier in this thread about there only being 2 in the country and 1 of those was on its way to me. Got it about 40 minutes ago and it is clearly not a new unit. It wasn't in the bubble wrap, it was just sitting on top of the bubble wrap in the box. Plus the unit is covered in corrosion and doesn't communicate with an OEM Honda scanner. Looks like anyone wanting a factory PCM is now totally SOL unless something changes.
I posted earlier in this thread about there only being 2 in the country and 1 of those was on its way to me. Got it about 40 minutes ago and it is clearly not a new unit. It wasn't in the bubble wrap, it was just sitting on top of the bubble wrap in the box. Plus the unit is covered in corrosion and doesn't communicate with an OEM Honda scanner. Looks like anyone wanting a factory PCM is now totally SOL unless something changes.
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
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From: Midwest. Aiming about mid-chest
Rep Power: 519 Re: 2004 civic immobilizer issue help!!
Hey man, an 02 PCM might be able to run the 04 engine but you're probably gonna have O2 sensor code problems....the newer one uses an AF sensor on the primary position and the older PCM can't make heads or tails of that input.
The 04 car and engine configuration needs to use an 04 or 05 PCM.
The 04 car and engine configuration needs to use an 04 or 05 PCM.
