engine light
 

I have a 99 a4 2.8. The engine light came on and I pulled 4 codes. I would appreciate any help or explanation. The codes are p0332, p0455, p0118, p1138 thanks.

RE: engine light
 

P0118 coolant temp sensor or wire short to ground
P0332 insecure/poor wiring connectionknock sensor bank 2

[hr]
P1138 long term fuel trim, idling bank 2 ( probably caused by the other problems ).

edit: P0455 large leak detected EVAP system

RE: engine light
 

So I'm possibly looking at an electrical/wiringproblem. I'll check wiring around coolant reservoir. What else should I look for.

RE: engine light
 

the last code is the most important ( large air leak ) and probably responsible for the rest so check all the pipes to the intake and from the EVAP purge valve

RE: engine light
 

thanks for the info. I'll check all lines, hopefully I'll find something.

RE: engine light
 

where is the evap purge valve located?

RE: engine light
 

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[IMG]local://upfiles/12092/3DFF27ACAF824D94B77ED6C6C28B773B.jpg[/IMG]

RE: engine light
 

P0455 > Gas cap loose

RE: engine light
 

i recently had the fuel trim code after an inspection. i repaired 2 vacuum hoses that were cracked and the problem was solved. look over all hoses for cracks, loose fit etc.