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HardCharger

Member Since: 03 Mar 2013
Location: Manila
Posts: 824

2011 Defender 110 Puma 2.4 SW Stornoway Grey

Fault Code P0340-24 (28)

Hi All!

He's been having hard starts lately and a while ago, it took a lot cranking and no firing. Worried, I stuck in the GAP IIDTool BT and got P0340-24 (2

Camshaft position sensor A circuit (blank 1 or single sensor) - General signal failure - signal stays high at 0 km. Cleared the fault code and he fired right up. Battery is new so it can't be that (yet). If memory serves, I replaced the old sensor for a new one.

The hard starting only happens during the first start of the day in the morning. Glow plugs are also new. Once he starts in the morning, no starting issues during the day. Repeat the next day.

Anyone have any ideas on what's going on and what I can do about it? For now, I'm back to bringing my IIDTool BT along with me just in case.

Quite frustrating as pretty much 80% of the truck is brand new.

No Better Friend, No Worse Enemy

24th Oct 2025 2:11am

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 3523

l had exactly the same fault with my Transit (TDCi)

I discovered three of the glow plugs were faulty. One was shorted and two were open circuit. l replaced them but it made no difference.

There was no power to the glow plugs, the relay had burnt out. Check you've got power to the glow plugs on cold startup.

24th Oct 2025 8:49am

andy63

Member Since: 30 Jun 2023
Location: north east
Posts: 836

As your code relates to a camshaft signal failure that would be a good place to start..
Checking power and ground to the sensor..if its like mine on a 2.2 it receives a 5v supply..
If they are good if you could check the signal..preferably with a scope..
That should give you an idea of what is going on with the camshaft sensor..
I have a trace of mine at tickover..
But you could watch yours at cranking and see what's going on..
One the engine starts the camshaft signal is redundant I believe..
That's what you should see ..( they red trace )
The blue is crank sensor and green is no1 injector..just as a reference..

Click image to enlarge

24th Oct 2025 11:03am

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