Cam Position sensor code

M

Miller205

New Member

Nov 14, 2024

2

0

1

Woodbridge, VA

Nov 29, 2024

#1

• Nov 29, 2024

• #1

I keep getting a CEL with a code of P0340, Camshaft Position sensor. I have replaced both sensors, but still getting the same code. I read somewhere that it may be the alternator starting to fail and supplying too much AC voltage to these sensors. Does this sound right, or is it something else?

TIA, Mike

 

Bullitt347

I have been doing it wrong this whole time

15 Year Member

Mar 23, 2007

4,019

3,016

204

Middle of Maine

Nov 29, 2024

#2

• Nov 29, 2024

• #2

There is a TSB regarding this concern.
And yes, the Alternator is usually responsible.
Usually.

 

Dino Dino Bambino

15 Year Member

Jun 13, 2007

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79

Cyprus

Dec 1, 2024

#3

• Dec 1, 2024

• #3

Miller205 said:

I read somewhere that it may be the alternator starting to fail and supplying too much AC voltage to these sensors.

Click to expand...

Yup. A failed alternator diode is the most likely culprit.