Thread: a dead d2

Hope this helps.
Extract from RAVE:

Crankshaft speed and Position (CKP) sensor (C0168)
The CKP sensor is located towards the rear of the engine below cylinder number 7, with its tip adjacent to the outer
circumference of the flywheel. The CKP sensor is the most important sensor on the vehicle and without its signal the
engine will not run. The signal produced by the CKP sensor allows the ECM to determine crankshaft angle and speed
of rotation. The ECM uses this information to calculate ignition timing and fuel injection timing.
The CKP sensor works as a variable reluctance sensor. It uses an electromagnet and a reluctor ring to generate a
signal. As the reluctor ring passes the tip of the CKP sensor the magnetic field produced by the sensor is cut and then
re-instated. The ECM measures the signal as an ac voltage.
The output voltage varies in proportion to engine speed. The reluctor ring has a set tooth pattern, 60 teeth are spaced
at 6 intervals and are 3 wide, two teeth are removed to provide a reference mark at 60 BTDC for number 1 cylinder.
There is no back up strategy or limp home facility if this sensor fails, the engine does not run.


In the event of a CKP sensor signal failure any of the following symptoms may be observed:

• Engine cranks but fails to start.
• MIL remains on at all times.
• Engine misfires (CKP sensor incorrectly fitted).
• Engine runs roughly or even stalls (CKP sensor incorrectly fitted).
• Tachometer fails to work.
• Flywheel adaption reset – ferrous contamination

If the CKP sensor fails while the engine is running the engine will suddenly stall, this is because the CKP sensor has
no backup strategy. If this happens the ECM will produce a fault code that it can store in its memory. If the engine is
not running when the CKP sensor fails, the vehicle will crank but will be unlikely to start, and no fault code will be
generated. In this instance the MIL lamp will remain illuminated and the tachometer will fail to read.
It is vital that the CKP sensor output wires are not reversed (i.e. the connector is fitted incorrectly) as this will cause
a 3 advance in ignition timing. This happens because the ECM uses the falling edge of the signal waveform as its
reference or timing point for each passing tooth on the reluctor.
Whenever a new crankshaft position sensor is fitted or the flywheel is removed, the adaptive values will have to be
reset, using TestBook.
Should a malfunction of the component occur, the following fault codes may be evident and can be retrieved by
TestBook:

Originally Posted by clubagreenie

CKP's are a hot failure item. When the car cools down they will come good and start again. Xtrails have the same issue that they won't acknowledge unless you report sometimes not starting then they have replaced them during services. A certain amount of post warranty yelling also did the trick. But back on topic let it cool and it should restart and point to it being CKP.

yep, not good enough. get even