how can you tell if a ecu is automatic or standard i have a p30 - Honda-Tech


how can you tell if a ecu is automatic or standard i have a p30

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Old 12-11-2004, 05:57 PM   #1
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Default how can you tell if a ecu is automatic or standard i have a p30

how can you tell if a ecu is a automatic or standard i have a p30 ecu
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Old 12-11-2004, 08:22 PM   #2
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Default Re: how can you tell if a ecu is automatic or standard i have a p30 (1990efeight)



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Old 12-11-2004, 09:00 PM   #3
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Default Re: how can you tell if a ecu is automatic or standard i have a p30 (1990efeight)

YES, I can finally share my research with someone.
To answer your question, look at the code on the ECU/ECM, If the last two digits are 50 and up (for example: ..-A53), then its an automatic.

Please correct me if Im wrong.
I noticed that the first sequence (5 digits) is identical for all Honda/Acura cars, so it doesnt do much.
The second sequence (3 digits) tell us what engine the ecu goes with.
The third sequence (3 digits) tell us what transmission it goes with.
I still dont know that the big letters (AWL, ARM, etc..) or the rest of the numbers stand for.


ECU/EMC CODE LETTER OTHER #s YEAR MAKER MODEL Trim OBD TRANNY


37820-P28-A02 AWL 760-840433 92-95 Honda Civic EX 1 5-speed

37820-P28-A01 ARM 760-620375 92-95 Honda Civic/CRX EX 1 5-speed

37820-P06-A02 AUI 740-327690 95 Honda Civic LX 1 5-speed

37820-P06-L00 AP? 742-501219 92-95 Honda Civic DX 1 5-speed

37820-P2T-A11 Z4 99-00 Honda Civic Si 2 5-speed

37820-P2P-A31 99-00 Honda Civic EX 2 5-speed

37820-P2E-A12 59 1200-246675 99-00 Honda Civic LX 2 5-speed

37820-P2E-L01 EF 901-115146 96 Honda Civic DX 2 (5-speed?)

37820-P2E-L02 LG 901-200297 96-98 Honda Civic DX 2 (5-speed?)

37820-P2P-A34 UP 921-322852 96-98 Honda Civic EX 2 5-speed

37820-P2E-A71 ER 260-175174 96-98 Honda Civic DX 2 (automatic?)

37820-P72-A02 G1 970-102606 96 Acura Integra GSR 2 5-speed

37820-P2N-A61 1111-301713 96-98 Honda Civic HX 2 CVT

37820-P2N-A31 297-302848 96-98 Honda Civic HX 2 5-speed

37820-P75-A53 981-202919 98 Acura Integra LS 2 Automatic


This is my conclusion for now:

ECU/ENGINE

P06 1.5l SOHC ----- OBD1 - LX, DX
P28 1.6l SOHC Vtec OBD1 - EX, Si
P2E 1.6l SOHC ----- OBD2 - CX, DX, LX
P2T 1.6l DOHC Vtec OBD2 - Si
P2N 1.6l SOHC Vtec OBD2 - HX
P2P 1.6l SOHC Vtec OBD2 - EX
P72 1.8l DOHC Vtec OBD2 - GSR
P75 1.8l DOHC ----- OBD2 - LS


ECU/TRANSMISSION

A50 and up Automatic
A61 CVT
A under 50 manual
L under 50 manual
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16, 37820, 37820p2ea12, 37820p2pa31, 92, a11, at, civic, dx, ecu, honda, lx, p2ea71, p2pa34, p2t

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