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03:04-06
Fault code 1202
Fault
Open circuit in the signal from engine speed
sensor 2.
Cause
The signal from engine speed sensor 2 has
indicated an implausible engine speed increase
during the time the control unit waited for the
space in the pulse pattern to pass. If the fault
code for no signal, fault code 1107, has been
generated at the same time, then the signal
must have been absent for several engine
rotations, otherwise the fault is due to a
temporary disturbance.
This fault code can be generated when starting
in extreme cold or when starting with a poor
battery
Remarks
If one of the engine speed sensors is faulty the
maximum torque is reduced by approximately
30% (as long as the fault is active) and the high
idling speed is reduced.
If both engine speed sensors are faulty the
engine will shut down.
Action
Check the engine speed sensors, connectors
and wiring.
Fault codes