Code 54

[Marvin willis]

First day of vacation and get my first engine code 54. What does that mean "incorrect bypass valve". Performs perfectly. What to do

 

[Marvin willis]

Light came on when I let my dad drive. I took it out later and couldn't get the light to come back on. I'm keeping my fingers crossed

 

[Murf'n'surf]

Sounds like a fluke code. I've seen some codes pop when you have a low battery or corrosion in the power system. It's worth a quick check of the battery and wiring.

 

[Marvin willis]

I am using a new battery that I had to charge when I got home and noticed today the fan didn't sound as loud.

 

[buckbuck]

Bypass valve is related to the no-wake mode, I believe. Any problems with it?

 

[Marvin willis]

When the light came on it didn't work but since then it has been perfect. Thanks