sargentpilcher

I was told I need to replace my ECU in my 1997 honda civic manual DX.

the number on mine is 37820-P2E-L02

and the number on the one I'm looking at buying is for a 1998 honda civic manual, with the number 37820-P2E-L32.

It's a VERY close match, but I'm not 100% sure on what the differences could be. Also the difference in year. Will this one work for me?

Gunner

This does not answer your question but is usefull info.. By this it would say the one you want is for your engine and i do believe the L32 is for a 5 speed. im not 100% so I will check some more.

To identify your ECU you will need to know its generation, part number and possibly its ROM number.

The ECU can be located in several places: under a metal plate in the passenger's footwell (models up to 91), in the passenger's footwell behind a plastic panel (models 92-99) or by the driver's footwell under a plastic panel (some models 2000+) The computer is connected via three connectors that pull out when a plastic clip is pressed. Remove the computer, and with a philips screwdriver remove the metal lid from the top of the computer. There may be small daughter circuit board covering some of the main circuitry. Unscrew this and lift it out of the way.
ECU Generations
Honda ECUs run in generations, which use different connectors. Below is a stack of ECUs running from the newest generation at the top to the oldest generation at the bottom.

OBD2B (left 3 plugs used)
OBD2A ECU


OBD1 ECU


OBD0 (JDM PR3 and PWO)


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 or G52

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:
The last 3 characters are broken down into 3 parts. "A" generally is used for US ECUs. "G" is European, and "J" is Japanese. There are other versions of this, but you get the idea. The second digit "0" typically means manual transmission, where a "5" means automatic transmission, and the last digit "1" is the version number.

• PG7 : 86-89 Integra (86-87 vac advance, 88-89 electronic advance)
• 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

sargentpilcher

Thank you very much for the info, but I had actually already seen that article when I googled for an answer, but unfortunately google didn't answer my question :/