Check engine light came on, diminished power

[lotzagoodstuff]

Just after exiting the ferry from Friday Harbor to Anacortes today, my check engine light came on and my truck idled and sounded ok, but I had considerably less power. It really acted like the wastegate was open. I flipped my toggle switch ebpv just to confirm that it wasn’t accidentally enabled but that definitely not the problem as it sounded/acted just like normal. I babied 80 miles home, it just wouldn’t pull like it usually does. I stopped for fuel, the light went off but came right back on about 30 seconds after idling again

I am going to plug in and pull codes, but I like the input of others, and I like to gamble on things with meaningless outcomes.

Anybody want to guess or gamble on the diagnosis?

 

[greenskeeper]

Guess? Not me. What code was found?

 

[lotzagoodstuff]

Funny story: no codes were present when I connected. Check engine light is off and now it’s running ok again.

 

[greenskeeper]

Funny story: no codes were present when I connected. Check engine light is off and now it’s running ok again.

What type of scanner did you use? There should be a code stored even if the CEL is now off.

 

[lotzagoodstuff]

I used Forscan. I was really surprised there were no codes stored.

 

[lotzagoodstuff]

Well, I just went out and hooked to it again and I do have two stored PCM codes:

P0344
P1211