P0452

©hester

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#1
Make
Saturn
Model
Vue
Year
2008
Miles
85000
Engine
2.4 Eco Tec
Could this code be set by leaking PVC fitting? This elbow is off the air box.

1543002768338.png
 

billr

wrench
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#2
Is the box that elbow is going into at atmospheric pressure? If so, then probably not the cause.
 
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#4
that needs repair,

P0452 is a Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage. There is a TSB your dealer will help with gm tsb 10-06-04-001.
 

©hester

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#5
Thx. The more I thought about the PVC hose, the less I thought it was the cause. I'll check out the TPS,
 

billr

wrench
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#6
Why the TPS? I don't think that evap pressure is affected by the TPS at all. First check that the gas cap is sealing to the tank, no rust on the seal area or damaged rubber seal.