Smart CDI Fault codes....

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Nicam99

New Member
Joined
Apr 4, 2014
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1
Car
MB
2011 CDI, around 9000 miles on the clock...

The car has been jolting a little, like when a petrol car has a slight misfire and then clears itself, then a few weeks ago it went into limp mode, no lights on the dash, just the normal not revving above 3000rpm.

I have attached Das, and there is a fault in the N3/9 CDI Control Unit,

P2306 Sensor supply voltage is too high or too low Stored
P0190 The signal from the b4/6 (Rail pressure sensor) is implausible or no signal.

I have run the tests, the voltage is 4.97 (range 4.6-5.2) so that's ok....

I have done the offset test and it says it all ok.

Cleared the codes, drive it and they come back.....

Stumped.....

Im in Essex if anyone has any ideas...
 

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