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					Originally Posted by JFP in PA  P0453 is the code for the pressure sensor being above  the upper limit, usually because of a short on the B+ wire.  The repair tree is to check the wiring running from the pressure sensor at the tank to the DME, repairing any faults. | 
	
 
Thanks.  I saw elsewhere that the sensor itself rarely fails.  If it’s a real code does it mean excessive pressure?