ECU/PCM Difference ULEV-SULEV?
Thread Starter
Honda-Tech Member
Joined: Sep 2004
Posts: 113
Likes: 0
From: Santa Cruz, CA, United States
Hi all,
I have a 2001 accord SULEV 4 cylinder. I have a bad ECU/PCM unit and need to get a replacement. I know there is a difference between the VTEC and the ULEV computer. Is there a difference between the ULEV and the SULEV?
The PCM i pulled from my car has 37820-PAA-L96 on the side and 1540-401120 underneath that and says KEIHIN corporation.
Thanks for any help! Heading to pick-n-pull today...
I have a 2001 accord SULEV 4 cylinder. I have a bad ECU/PCM unit and need to get a replacement. I know there is a difference between the VTEC and the ULEV computer. Is there a difference between the ULEV and the SULEV?
The PCM i pulled from my car has 37820-PAA-L96 on the side and 1540-401120 underneath that and says KEIHIN corporation.
Thanks for any help! Heading to pick-n-pull today...
There is a difference between the PCM for an ULEV vs. SULEV. The SULEV has stricter emission controls, part of this was the PCM's electronic controls affecting the VTEC function, as well as other functions for lower emissions.
It possibly would still run with the ULEV PCM; however, the emission controls will be altered and there is still the possibility it may not pass California's current smog tests in which they plugged into the OBD-II port.
You would also have to get the PCM reprogrammed due to the Immobilizer, which will cost you money without guarantee of how it may or may not perform.
You would also have to get the PCM reprogrammed due to the Immobilizer, which will cost you money without guarantee of how it may or may not perform.
Thread
Thread Starter
Forum
Replies
Last Post
cityofcaterpillars
Engine Management and Tuning
2
Apr 13, 2016 07:06 PM







