From Jag DTC summaries OBDII

P0335

EMSOBD II

CKP Sensor circuit malfunction

To monitor:
Start engine; momentarily
race the engine; stop engine
Repeat two additional times
Start engine; idle 30 seconds.
Accelerate from stop through
complete engine rpm range;
coast to a stop
Drive the vehicle steadily
between 48 – 97 km/h (30 –
60 mph) for 5 minutes; coast
to a stop
Accelerate smoothly through
complete accelerator pedal
travel; coast to a stop
Idle engine 30 seconds
Note: If CKP Sensor fault
exists and engine will not
start, battery voltage must
drop below 10.5 V during
cranking for DTC to be
flagged. (Crank period – 30
seconds.) If CKP Sensor fault
exists, engine will start on the
second crank as the ECM will
default to CMP signals for
synchronization.
2 A

Default action:
ECM Default:
– Maximum engine speed
reduced

CM pin number :
EN16
-036
-037

Possible Causes:
CKP Sensor disconnected
CKP Sensor gap incorrect / foreign matter on
sensor face
CKP Sensor sensing circuit:
open circuit, short circuit to ground,
short circuit to high voltage