Join Date: May 2006
Location: Gaithersburg, MD
Car Year: 2009
Car Model: Outback XT-B
The crank position sensor doesn't detect missing, it just lets the ECU know where the crank is (and thus, how to time the engine).
If the ECU DOESN'T know where the crank is, it'll kick the timing ALL the way retarded, and the car will run like crap.
My crank position sensor didn't throw a CEL until the morning it stalled, and only after it stalled. It probably died 10 times while in traffic on the way to the shop, and it was HARD to restart. Cranking for 30+ seconds at one point.
09 SWP Outback 2.5XT 5MT 263whp, 337 lb-ft