CEL P0600: Multiplex control system error
Registered User
Joined: Sep 2009
Posts: 829
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From: North,MS
My CEL threw a P0600 too. It happened when I was in the last hour of a 6 hour drive. A google search says P0600 is a serial communication link failure. Furthermore some more searches revealed that other S2k members have received this CEL. Apparently it's due to a bug in the ECU software - the ECU throws a P0600 when the ignition is on for 4 or more hours. Weird!
Read this:
P0600 Problem
How did you resolve this issue? Anyway for the dealerships to fix this? I have HondaCare.
Read this:
P0600 Problem
How did you resolve this issue? Anyway for the dealerships to fix this? I have HondaCare.
What did you guys do to resolve this CEL ?
Joined: Oct 2008
Posts: 1,113
Likes: 51
From: San Francisco
Searching s2ki (https://encrypted.google.com/search?...ki.com%20p0600), it appears a Honda dealership needs to update your "PGM-FI" (and/or ECU/ECM?)-- every thread says that, but no one has posted an update on whether that fix was accurate or not.
Be the change you want to be in the world and report back if that fix works for you.
Be the change you want to be in the world and report back if that fix works for you.
Applies To: 2006 S2000 – ALL
2007 S2000 – From VIN JHMAP2...7S000001 thru JHMAP2...7S003235
The MIL comes on with DTC P0600 (serial
communication link malfunction).
PROBABLE CAUSE
When the ignition switch is on for about 4 or more
hours (engine running or not), the ECM can
misinterpret the serial communication signal and set
DTC P0600.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS."
2007 S2000 – From VIN JHMAP2...7S000001 thru JHMAP2...7S003235
The MIL comes on with DTC P0600 (serial
communication link malfunction).
PROBABLE CAUSE
When the ignition switch is on for about 4 or more
hours (engine running or not), the ECM can
misinterpret the serial communication signal and set
DTC P0600.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS."
Moderator
Joined: Jul 2002
Posts: 22,383
Likes: 1,832
From: Long Island, New York
P0600 is a communication failure between the ecu and the reported information from the gauge assembly.
There is a Honda procedure that uses the trip button and the headlight switch to activate an internal diagnostic mode. This mode runs through each system, to narrow down and pinpoint the specific system that has failed to communicate back to the ecu.
I have seen this code once about 10 years ago, it was a damaged connection in the ABS unit.
Get the Honda manual, and follow the self-diagnosis for the gauge assembly.
There is a Honda procedure that uses the trip button and the headlight switch to activate an internal diagnostic mode. This mode runs through each system, to narrow down and pinpoint the specific system that has failed to communicate back to the ecu.
I have seen this code once about 10 years ago, it was a damaged connection in the ABS unit.
Get the Honda manual, and follow the self-diagnosis for the gauge assembly.
Registered User
Joined: Sep 2009
Posts: 829
Likes: 0
From: North,MS
P0600 is a communication failure between the ecu and the reported information from the gauge assembly.
There is a Honda procedure that uses the trip button and the headlight switch to activate an internal diagnostic mode. This mode runs through each system, to narrow down and pinpoint the specific system that has failed to communicate back to the ecu.
I have seen this code once about 10 years ago, it was a damaged connection in the ABS unit.
Get the Honda manual, and follow the self-diagnosis for the gauge assembly.
There is a Honda procedure that uses the trip button and the headlight switch to activate an internal diagnostic mode. This mode runs through each system, to narrow down and pinpoint the specific system that has failed to communicate back to the ecu.
I have seen this code once about 10 years ago, it was a damaged connection in the ABS unit.
Get the Honda manual, and follow the self-diagnosis for the gauge assembly.
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