i was driving along at about 60-70mph when all of a sudden my93 WRX started spluttering. Thinking it maybe head gasket failure i pulled over and checked the engine i could find no evidence of it being the head gasket theres no smoking from the rear and theres no oil in the water. ive plugged in the ecu leads and its showing two faults. code 45 - pressure sensor and 31 - throttle position sensor. ive since reset the ecu and its now showing no faults. does this still mean that the two sensors are faulty the car is still spluttering just the same.

 

Have you split a hose? Or has the wastegate control arm come adrift?

 

without sounding stupid i cant see any split hoses but is the arm on the wastegate suppose to move when the engine is being revved. if this is the case then i think its seized.