We have a 2012 Honda Odyssey EX-L with 147,000 miles. My wife is its primary driver. The check engine light recently came on, no words, just an orange outline of an engine. It was solid, not flashing. I read online that you could buy an inexpensive device to check specifically what the engine light really means. It said P3400. I found a thread here that suggested this likely involves the ECO cylinder deactivation system, but that it was not a serious problem and could potentially be ignored. (P3400 Error while on vacation - Seeking advice) The ECO light was still coming on. I realize there are two separate oil pressure switches. I assume the light still coming on just means that the other set is working fine. Because it looks like it’s a very easy and inexpensive fix, I ordered the parts I need anyway and intended to make the repair myself soon. In the meantime, the check engine light has gone off. The engine has been running fine throughout all of this. I’ve since read another thread on here that says that having the ECM system not functioning is actually better for the longevity of the engine and that the fuel mileage gain the system provides is quite small. (The VCM mega thread - what is VCM, does my vehicle have...)
My conclusion from all of this is that I should return the parts and forget about making this apparently unneeded repair. Any advice on that would be greatly appreciated. TIA
My conclusion from all of this is that I should return the parts and forget about making this apparently unneeded repair. Any advice on that would be greatly appreciated. TIA
