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Posted

Having a problem with a 2002 C5 with 2.0 HDi engine. After a five week period of no use the car we finally tried the car. The battery was low so recharged the battery and tried again. This time started up without any problems until we came to a hill and found that the car seemed to lack power and was smoking a lot out of the exhaust. Checked the car using Lexia diagnostics and it reported a cam position sensor fault. We replaced that and it was OK fault cleared. Driven the car for 80 miles with no problem - just towed a Corsa back home from 25 miles away with no problems with the C5 BUT it did have a slight hesitancy occasionally - like a misfire and doesn't like 3000 revs. At the moment diagnostics isn't showing anything. Before and after the sensor swap the engine man light did NOT come on. 

 

Any ideas????

 

Thanks Mike

Posted

Filter was  changed about 3-4 months ago. Now tried the Lexia again running the car around the block a few times and the diagnostics is now showing error code P0340 camshaft position sensor circuit malfunction. Can't understand this as the sensor has just been replaced and all the advice available on internet says the EML should light up which it doesn't. 

Posted
Does the eml lamp come on when the key is turned in the ignition until the engine is running to show the lamp is ok ?

 

I would check the sensor you have removed and the new one with a meter for resistance across the pins to see if they are showing a fault. If not faulty then the problem may be a bad connection or a wiring problem. If you have not yet cleared the fault code you could look at the freeze frame data stored when the fault code was created since this may also give a clue as to the problem. This is from the C3 Common Problems topic:

 

25. Camshaft position sensor failure - 2010 C3, 1.4 VTI petrol.

This happened on our C3, 15k miles. The engine management light came on, anti pollution message, went in to limp mode so the performance was poor. Fault codes were read as P0341, 0342, 0343 camshaft position sensor A bank 1 or single sensor range, low, high. Both the inlet and exhaust sensors were replaced as I thought if one has failed the other may not be too far behind. On checking, the inlet one gave a resistance measurement between all of the 3 pins and the new and exhaust only did on 2 pins. £47 for 2 sensors, they come with new O-ring seals.

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