P0340 Camshaft Position Sensor

WolverineFW · **Posted:** Mon Aug 31, 2009 8:44 pm

Anyone had this code before? I was reading somewhere that on a lot of common rail diesels, this sensor is only used during start-up. Is that the case for the 2.8L?

I got this code this morning but it did not return after I cleared it. I am guessing it was just a gremlin. Anything major to worry about?

dgeist · **Posted:** Tue Apr 05, 2011 6:58 pm

WolverineFW wrote:

Anyone had this code before? I was reading somewhere that on a lot of common rail diesels, this sensor is only used during start-up. Is that the case for the 2.8L?

I got this code this morning but it did not return after I cleared it. I am guessing it was just a gremlin. Anything major to worry about?

I just got this code tonight. Interested to know if it's any more common than the average gremlin.

Dan

mdalien · **Joined:** Tue Jun 22, 2010 10:22 pm **Posts:** 41

I had it a couple of years ago.
Cleared it and has not returned.

WolverineFW · **Posted:** Tue Apr 05, 2011 8:20 pm

I have never seen it again since I cleared the one time 2 years ago.

GreenDieselEngineering · **Joined:** Sun Jun 07, 2009 5:10 pm **Posts:** 1111

The cam and crank sensors do a handshake during cranking to verify everything is in time, then it releases the injection. Sometimes the phase is slightly out due to wiring voltage fluctuations, hot/cold effects, vibration, etc. and it will flag a code momentarily. As long as the code is not repeating often it is most likely a gremlin.

dgeist · **Posted:** Tue Apr 05, 2011 9:43 pm

Sounds like I should let it be and keep and eye on it. I didn't have them clear it at the parts store. Will the CEL go away on its own after a few engine cycles?

Dan

P0340 Camshaft Position Sensor

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