Codes P0340 and P0344, where are the camshaft position sensors located?

2008 FORD F-150

196,500 MILES • 5.4L • V8 • 4WD • AUTOMATIC

CNALL16

MEMBER
2 POSTS

I am looking for a diagram of where the camshaft position sensors are located in the truck listed above Lariat model with a 5.4l 8-cylinder Triton. The videos I've watched do not match. I bought sensors and have a mechanic friend that will help me replace. I'm just trying to gain knowledge of where they are located and if we will need to take the valve cover off for repair. I understand there may be an issue with the phasers, timing chain, and/or tensioner. Hoping this will be something I can get fixed on my own.

Oct 9, 2024 at 3:18 AM

STRAILER

✓Experienced Mechanic
55,233 POSTS

Yep, you got the problem under control, if the sensors do not fix it then the front of the engine will need to come apart to replace the timing chain guides and camshaft actuators which is common. This video will show you how and I have included the sensor location as well in the images below.

https://youtu.be/dler2t2e4Zw?si=qSIRSR4LK1eiBAef

P0340 - Camshaft Position Sensor "A" Circuit Malfunction
P0344 - Camshaft Position Sensor "A" Circuit Intermittent

I can tell you the sensors will probably not fix it at 196k.

Here are the camshaft position sensor locations. Check out the images (below). Let us know how it goes.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Oct 9, 2024 at 4:48 AM

CNALL16

MEMBER
2 POSTS

Thank you very much Ken. Will be doing the work on Saturday so i will be sure to update you on the progress.

Oct 9, 2024 at 5:22 AM

STRAILER

✓Experienced Mechanic
55,233 POSTS

Sounds good.

Oct 10, 2024 at 4:37 AM

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