How to Identify your ECU
03-09-2017, 03:18 PM
#101
07-15-2018, 10:33 AM
#103
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Re: 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.
)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.
07-15-2018, 06:57 PM
#104
Honda-Tech Member
Re: How to Identify your ECU
Megan Peterson, your ECU is located behind the right kick panel plastic trim on the right side of the car just under the glove box ahead of the front edge of the door opening. The proper ECU part number for a '99 Civic EX 5-speed would be 37820-P2P-AXX... the "XX" denoting the program version, and this number would be below 30 for a 5-speed. If the ECU is the wrong one... it COULD make the idle hunt up and down. However, it is likely that you have something else wrong and the ECU is not your problem.
03-18-2020, 11:23 AM
#106
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Join Date: Mar 2020
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Re: 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.
)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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