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Old 03-24-2004, 10:12 AM   #1
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Default How to Identify your ECU

Hey guys, I wanted to get a thread going on how to indentify what ECU you have so that I can make a link in the FAQ thread. (and for the noobs who ask )

So far this is all the info I got. If you have some more you can add, please do so. Thanks

ECU Part Numbers

All Honda ECUs have a part number which is located on the side of the ECU and inside the ECU on the connector. e.g. 37820-P72-A01

The part number consists of three components:

Honda's part number for ECU, which is always 37820
Three characters (which are loosely related to the model of car/engine). e.g P72
Three characters (which are the revision of the ECU) e.g. A01
The middle three characters are the most useful to identify what the ECU is. Different generation ECUs may use the same characters. e.g. a P72 OBD I ECU is different from a P72 OBD II ECU. Here is a list of common ECUs:

PG6: 88-89 Integra (all makes)
PM5: 88-91 Civic/CRX DX
PM6: 88-91 Civic/CRX SOHC Si
PM7: 89-91 DOHC ZC (JDM 'EF' ECU)
PM8: 88-91 CRX HF
PR2: 89-91 ZC (Euro)
PR3: 89-91 JDM B16A EF8/9
PR3-J00 or J51: 92 JDM Integra B16A EF8/9
PW0: 89-91 JDM B16A EF8/9 DA6-XSi
PR4: 90-91 Integra LS/GS
PS9: 88-91 4 door Civic EX Auto
P05: 92-95 OBD-1 Civic CX
P06: 92-95 OBD-1 Civic DX
P07: 92-95 OBD-1 Civic VX
P08: 92-95 OBD-1 Civic D15 JDM
P0A: 94-95 OBD-1 Accord EX
P13: 93-95 OBD-1 Prelude Vtec
P14: 93-95 OBD-1 Prelude Si (non Vtec)
P27: 92-95 OBD-1 EG JDM Civic 1600 sohc
P28: 92-95 OBD-1 Civic Si/Ex
P30: 92-95 OBD-1 DelSol DOHC Vtec Si/EG SiR
P54-G31: 1997 Honda Accord 1.8 LS
P61: 92-93 OBD-1 Integra GSR
P72: 94-95 OBD-1 Integra GSR
P72: 96-00 OBD-2 Integra GSR
P73: 96-00 OBD-2 Integra Type-R (JDM & USDM)
P74/75: 92-95 OBD-1 Integra LS/GS
P75: 96-00 OBD-2 Integra LS/GS
P2N: 96+ OBD-2 Civic HX Coupe
P2P: 96+ OBD-2 Civic EX Coupe
P2E: 96+ OBD-2 Civic DX Coupe
P2M: 96+ OBD-2 NZ Civic SOHC VTEC
P2T: 99+ OBD-? Civic Si Coupe
P5P: 97-00 OBD-2 Prelude Type-S (JDM ECU)
PBA: 97+ US Acura 1.6EL
PCT: 98+ JDM ITR / CTR
PCX: 99+ OBD-? S2000

PICS OF WHAT ECU IT IS....



From top to bottom...

1. OBD IIb ECU
2. OBD II ECU
3. OBD I ECU
4. OBD 0 (JDM PR3 and PWO)

Oh and correct me if I'm wrong somewhere.
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Old 03-24-2004, 10:13 AM   #2
 
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Default Re: "How to indentify you ECU" (Ki3t)

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Old 03-24-2004, 10:37 AM   #3
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Good write up bro. very useful info
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Old 03-24-2004, 10:39 AM   #4
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Default Re: (JDMlifestyle)

great great, search friendly too

edit: you should include links to pin-outs for common ecu's
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Old 03-24-2004, 10:47 AM   #5
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Default Re: (jdmsiR20)

add to that my old PGMFI post. a quick pic in ID'ing a 5spd to auto ECU




in 88-91 ecus (PM6, PR4, PW0, PR3, PM7):
5spd = 000, 001, 002, A00, A01, A10, J00, J001, C01, C00
Auto = J51, J50, A50, A51, 901, A60, C50, C51, X30, A80, L50, L51

92-5 ECUs (P28, P30, P61, P72, P91, P08)
5spd = 000, 001, 002, 003, A00, A01, A02, C00, C01, C02, J00, J01, J02, G00, G01
Auto = J50, J51, 901, 902, C50, C51, C52, A50, A51, A52, L50, L51, G51

96-00 ECUs (P2E, P2P, P2J, P72)
5spd = 000, 001, 002, 003, A00, A01, A03, C00, C01, C02, C03, J00, J01, J02, A11, C11
Auto = A70, A71, A72, A91, A92, C70, C71, C72, C91, C92

from the patterns we can learn the following:
first letter = country of orgin
J = Japan
C= Canada
A=USA
G=Europe
second digit, if 5, 7, 9 then ecu is auto usually
third digit denotes the version/variation
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Old 03-24-2004, 10:50 AM   #6
 
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Default Re: "How to indentify your ECU" (Ki3t)

very nice write up man
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Old 03-24-2004, 04:46 PM   #7
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whats weird is that you dont mention 92-93 integra ecu which is a pr4 also. have it here in front of me.
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Old 03-24-2004, 05:34 PM   #8
 
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damn good info man, nice right up
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Old 04-02-2004, 02:05 AM   #9
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So what does the 3rd digit mean ie:p28-a00. a=america 0=manual. what does the last 0 mean???
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Old 04-02-2004, 02:11 AM   #10
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Default Re: "How to indentify your ECU" (Ki3t)

this thread rocks
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Old 04-02-2004, 03:21 AM   #11
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Default Re: "How to indentify your ECU" (sshaikh01)

This thread is going to help out alot of people,including me
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Old 04-02-2004, 04:43 AM   #12
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Default Re: "How to indentify your ECU" (Clicky Pow)

it just helped me
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Old 04-02-2004, 05:28 AM   #13
 
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Default Re: "How to indentify your ECU" (b00st)

Hey i have a p06-L01
thats a 5 speed right?
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Old 04-02-2004, 06:06 AM   #14
 
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Default Re: "How to indentify your ECU" (sshaikh01)

Quote:
Originally Posted by sshaikh01
this thread rocks


Nice one Ki3t
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Old 04-02-2004, 09:32 AM   #15
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Default Re: "How to indentify your ECU" (Ki3t)

i was just asking a freind a question about a computer and i get on here and it gets answered, good deal.
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Old 04-02-2004, 09:51 AM   #16
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Default Re: "How to indentify your ECU" (Quad-Damge)

Quote:
Originally Posted by Quad-Damge
Hey i have a p06-L01
thats a 5 speed right?
yes its 5spd. L = California emissions or typically high altitude states as well.
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Old 04-02-2004, 10:23 AM   #17
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Quote:
Originally Posted by underrated
So what does the 3rd digit mean ie:p28-a00. a=america 0=manual. what does the last 0 mean???

Anyone
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Old 04-02-2004, 10:51 AM   #18
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Default Re: "How to indentify your ECU" (Ki3t)

good stuff
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Old 04-02-2004, 11:20 AM   #19
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Quote:
Originally Posted by eg6ajk

from the patterns we can learn the following:
first letter = country of orgin
J = Japan
C= Canada
A=USA
G=Europe
second digit, if 5, 7, 9 then ecu is auto usually
third digit denotes the version/variation
It sounds like the original information is what your looking for...I would assume that the third 0 in your code means it's the first version of that ECU.
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Old 04-02-2004, 11:25 AM   #20
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That's what I thought, but according to the parts guy at Honda, he says it's the obd model. I was like my cars obd-1 so why is there a 0?? SO he says you have an obd-0 ecu WTF a obd-0 p28, ok!
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Old 04-02-2004, 11:26 AM   #21
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Default Re: "How to indentify your ECU" (Ki3t)

thanx everyone as this thread is gonna help me big time as I begin my mini-me swap in my ek hb! (y7/y8 mini-me)

Is the 37820-P2P-A34 from a 96-00 ex(usa)/si(canada)?

cheers


Modified by specificcivic at 8:41 PM 4/2/2004
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Old 04-03-2004, 01:57 PM   #22
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Quote:
Originally Posted by underrated
That's what I thought, but according to the parts guy at Honda, he says it's the obd model. I was like my cars obd-1 so why is there a 0?? SO he says you have an obd-0 ecu WTF a obd-0 p28, ok!

Hi
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Old 04-03-2004, 02:11 PM   #23
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nice, very helpful
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Old 04-03-2004, 02:12 PM   #24
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Sweeet thread!
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Old 08-27-2004, 12:57 PM   #25
 
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you missed the p29... obd1 zc (jdm) was p29-900 or p29-000... i have the 000 which i dohc zc obd1 out of 92-95 civic 5sp
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2004, 2006, 37820p75a52, 97, accord, auto, civic, coupe, ecu, flash, honda, identification, manual, obd, pr4

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