Trap2Terrorist

iTrader: (3)

I've got a PSi3 data monitor which reported a P0340 error about a year ago, with the CEL coming on permanently at the same time, (rather than flashing).

The problem went away but in the last couple of weeks has come back, I have reset the ECU a couple of times during this period because of changes in fuel (emergency fill up at a station) but it has returned each time within a few days.

The PSi3 manual details the error as:

However what exactly does this mean - does it mean the sensor/electrical circuit is faulty, or does it mean the camshaft position is wrong?

Also, what are the implications of this error, is it a precursor for something more serious or do I just need to replace a sensor/part?

Thanks, Rich.

p.s. I should add that the first time it came back on recently it was a day or so after these:

P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected

WRX_Rich

iTrader: (5)

the bugeye random cel generator

lots of us get the p0340 after full blooded runs in first or second gear
don't bother reseting the ecu just restart the car 4 or 5 times

if its any thing like mine, you get the cel 3 or 4 times in a month then its fine for the next 6 months

Trap2Terrorist

iTrader: (3)

Sounds familiar, only doing it after some hard driving. Sounds like it's standard bugeye functionality, Subaru's way of saying "stop caning your car!"

Do you also get the misfire CEL/errors?

WRX_Rich

iTrader: (5)

never had the misfire errors but i know others that do

one cause of this was a nutral position switch in the gear box going faulty