Error Code 51 and 52...

cgreiner · 04-04-2009, 09:36 PM

51: "Switch Signal"

I know I did not make the mistake of having the AC on or hitting the gas while checking the engine lights. So, could this be from a bad ISC unit? I know I have a small coolanty leak somwhere in that area. I believe where one of the hoses connects to the ISC.

52: "Knock Sensor"

Uh oh... :-)

Could this be from using premium gas ?

04-04-2009, 09:36 PM	#1
cgreiner 3" Exhaust Join Date: Aug 2008 Location: North Carolina Posts: 63	Error Code 51 and 52... 51: "Switch Signal" I know I did not make the mistake of having the AC on or hitting the gas while checking the engine lights. So, could this be from a bad ISC unit? I know I have a small coolanty leak somwhere in that area. I believe where one of the hoses connects to the ISC. 52: "Knock Sensor" Uh oh... :-) Could this be from using premium gas ?