Throwing Codes HELP

[p-Bar]

I had a small oil leak at the filter housing, repaired and gunked the engine now I am throwing 2 codes



PO480 cooling fan 1 control circuit

PO243 Waste gate pressure control PWM

and A/C doesn't work



pulled the connectors A/C and cleaned with WD40

pulled the waste gate connector cleaned with WD40

reset with Smarty Jr. still throwing codes

checked fuse for A/C and switched the ac relay with fog lamp relay. any ideas??

 

[p-Bar]

No one?????

 

[BBoling]

what do you mean repaired and gunked the engine? What did you do, using what materials, if any, EXACTLY? did you pressure wash the engine?

 

[p-Bar]

had small oil leak at filter housing. Used the spray can gunk engine cleaner and hosed off.

 

[sag2]

Make sure the harness is not rubbed through near the A/C compressor. Also could have residue from the Gunk and water that is shorting inside the connector(s). Are they stored or active codes?

 

[p-Bar]

pulled connectors apart and WD40 them. The check engine stays on even after reset . The smarty says DTC PRESENT if that helps. Will check harness at A/C pump , checked harness all looks good. It resets then when I start it light stays off till I rev it a bit then it comes back on. What else?

 

[rbattelle]

Sag2 is probably right on this one - you've got a short somewhere in the A/C electrical harness.

Others have had this issue and it causes all sorts of strange, seemingly-unrelated problems.

[I hate it when I do something seemingly harmless and the whole machine comes crashing down immediately thereafter. ]

Ryan

 

[p-Bar]

Ryan here was the thread you commented on

https://www.turbodieselregister.com...sions-2003-2007/199082-truck-won-t-start.html