Cars · Reference

Honda PCN ECU Hardware Reference

Technical reference for the Honda PCN ECU, including OEM part numbers and board identification.

Updated June 19, 2026 Beginner 2

lithiumus Author

The PCN ECU is a factory-produced Honda engine control unit. Use the following specifications for identification and diagnostic purposes.

Hardware Specifications

OEM Part Number: 37820-PCF-N51
PCB Board Reference: CY-EH2955A

Note

Ensure the board reference matches the physical unit before attempting any hardware modifications or diagnostic procedures, as internal layouts may vary between production batches.

Applies to

23 taxonomy links

Cars 23 links

Acura

7 links

Model Integra

Generation 3rd Gen (DC2/DB8) 1994-2001 / DC2, DC4, DB7, DB8 Generation 4th Gen (RSX) 2002-2006 / DC5

Model NSX

Generation 1st Gen (NA) 1990-2005 / NA1, NA2

Model RSX

Generation DC5 2002-2006 / DC5

Honda

16 links

Model Accord

Direct taxonomy match

Model Civic

Generation 4th Gen (EF) 1988-1991 / ED, EE, EF, SH Generation 5th Gen (EG) 1992-1995 / EG, EH, EJ Generation 6th Gen (EK) 1996-2000 / EK, EJ Generation 7th Gen (EM/EP/ES/EU) 2001-2005 / EM, EP, ES, EU

Model CRX

Direct taxonomy match

Model Integra

Generation 3rd Gen (DC/DB) 1994-2001 / DC1, DC2, DB6, DB7, DB8, DB9 Generation 4th Gen (DC5) 2002-2006 / DC5

Model NSX

Generation 1st Gen (NA) 1990-2005 / NA1, NA2

Model Prelude

Direct taxonomy match

Model S2000

Generation AP1 1999-2003 / AP1 Generation AP2 2004-2009 / AP2

Hardware Specifications#

Applies to

Acura

Honda

Hardware Specifications