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Honda ECU Part Numbers

OBD-0 (88-91)

USDM

  • PM5 88-91 civic/crx STD/DX; DPFi
  • PM6 88-91 civic/crx Si; MPFi
    88-89 PM6’s are not re-programmable due to 24-pin eprom chip
    90-91 PM6 ecu’s are re-programmable due to 28-pin eprom chip.
  • PM8 88-91 crx HF; MPFi
  • PR4 90-91 Integra RS/LS/GS

JDM

  • PM7 civic/crx Si DOHC ZC; semi-rare ecu
  • PR3 civic/crx SiR & integra XSi/RSi DOHC VTEC (B16A)
  • PW0 civic/crx SiR & integra XSi/RSi DOHC VTEC (B16A)

OBD-2A
(96-98 Civic / 96-99 Integra / 97-01 Prelude)

USDM
  • P2E civic CX/DX hatchback/coupe (D16Y7) (96-98)
  • P2N civic HX coupe; uses a 5-wire 02 sensor (D16Y5) (96-98)
  • P2P civic EX coupe (D16Y8) (96-98)
  • P72 integra GS-R (B18C1) (96-99)
  • P75 integra RS/LS & LS-SE/GS (B18B1) (96-99)
  • P13 96 prelude VTEC (H22A1); super rare ecu! (1996 only)
  • P5M prelude VTEC (H22A4); oddly remained OBD2A (97-01)
  • P5P prelude VTEC Type-S (H22A4); oddly remained OBD2A (97-01)
JDM
  • P2T civic SiR hatchback (EK4/B16A) (96-00)
  • PCT civic Type-R (EK9/B16B) (96-98)
  • P73 integra Type-R (DC2/B18C) (96-01); never became OBD2B

OBD-2B
(99-00 Civic / 00-01 Integra / 00-09 S2000)

OBD2B introduced the Immobilizer Theft Deterrent System for Integra, S2000, Accords and other Honda vehicles but weirdly excluded from Civics.
USDM
  • P2E civic CX/DX hatchback/coupe (D16Y7) (99-00)
  • P2P civic EX coupe (D16Y8) (99-00)
  • P2M civic HX coupe (D16Y5) (99-00)
  • P2T civic Si coupe (B16A) (99-00)
  • P72 integra GS-R (B18C); Immobilizer equipped
  • P73 integra Type-R (B18C5); Immobilizer equipped
  • P75 integra RS/LS/GS (B18B), Immobilizer equipped
JDM
  • PCB prelude Type-S
  • PCT civic Type-R (EK9/B16B) (99-00)
  • PCX S2000 (F20C/F22C)

OBD-1 (92-95)

USDM
  • PR4 integra RS/LS/LS-SE/GS (B18B); can be converted to VTEC
  • P0A accord EX (SOHC VTEC)
  • P05 civic CX; uses 1-wire 02 sensor; can be converted to VTEC + 4-wire 02
  • P06 civic DX (D15B); can be converted to VTEC
  • P07 civic VX (D15B SOHC VTEC-E); uses 5-wire 02 sensor; Honda used two different main boards with the P07. The ’11F0′ P28-style board is the chip friendly version while the ‘1560’ board is the unfriendly bastard; supports B-series DOHC VTEC programming.
  • P14 prelude Si DOHC (H23)
  • P13 prelude DOHC VTEC (H22A)
  • P28 civic Si/EX (D16Z6 SOHC VTEC); re-programmable to DOHC VTEC
  • P30 civic delsol Si VTEC (B16A)
  • P61 integra GSR (B17A); only available in the US
  • P72 integra GS-R (B18C1)
  • P74 integra RS/LS/LS-SE/GS (B18B); can be converted to VTEC
  • P75 integra RS/LS/LS-SE/GS (B18B); can be converted to VTEC
JDM/UK
  • PR3 integra XSi/RSi DOHC VTEC (B16A); semi-rare ecu, equivalent to a US P30 ecu.
  • P08 civic VTi (D15B SOHC VTEC); small square ecu body type; equivalent to a P28; supports B-series DOHC VTEC programming
  • P13 prelude DOHC VTEC (H22A); only supports JDM P13 programming
  • P27 civic coupe (D16A); rare ecu; equivalent to a P28; supports B-series DOHC VTEC programming
  • P29 civic (DOHC ZC); rare ecu! Equivalent to a P06 ECU; supports B-series DOHC programming
  • P30 civic SiR & delsol SiR (B16A); small square ecu body type with knock sensor daughter board
  • P72 integra SiR/SiR-G (B18C); small square ecu body type with knock sensor daughter board; this ECU can be finicky and not like my programs
  • P91 civic Orthio (D16A SOHC VTEC); rare but equivalent to a P28; supports B-series DOHC VTEC programming