Car 2005 Legacy. CA emissions.

Short block from 2003 recently swapped.

Got P340 cam sensor code.

Never had before swap.

Pulled connector to check for 5 volts.

No 5 volts, but the car started and runs w/o a hiccup!!!!

Where do I start?

 

Subaru's use Variable Reluctance sensors and as-such only have a signal and ground. They do not use 5v. 

GD

17 hours ago, ocei77 said:

Car 2005 Legacy. CA emissions.

Short block from 2003 recently swapped.

Got P340 cam sensor code.

Never had before swap.

Pulled connector to check for 5 volts.

No 5 volts, but the car started and runs w/o a hiccup!!!!

Where do I start?

 

Clear code - does it come back immediately?

Check timing belt for looseness/installation.

Check that cam/crank sensor connectors are fully seated and clean. 

Check that the sensors are installed and properly tigthened down. 

This isn't one of those 'cam gear / sprocket' issues - between models/years of the same engine *?

Since you stated short block, I'm guessing you re-used your '05 heads, so likely not, but throwing it out there. 

 

*(although technically the '05 is an EJ253 and the '03 was EJ251 - but I thought the main difference was the EJ251 is MAP-based vs. the EJ253 is MAF-based?)

Did you swap the '03 harness to the newer short block? The only time I have seen a 340 code is from a salvage car with a broken timing belt, which in your running condition is obviously not the case.

Haven't done all the suggestions yet, so that is the reason I have been slow to update.

Immediate return of code YES.

Cam and crank sensors are fully tightened.

The cam sensor has been cleaned with carb cleaner, will do crank tomorrow.

All installed and tight.

I half checked the timing belt ( only checking the alignment of Bank two and the crank mark. Will pull all to check that all three are aligned.)

Finally got around to checking the timing.

Spot on. 

Checked continuity for both ends of cam sensor wires. Good.

Did not get to the ECU side.

Suggestions?