The anti-pollution warning has not occurred since last Friday after I had arranged for a service on Monday at the local Citroen dealer. They cleared down the fault,again, and has been ok. I noted the details in "the garage" forum on this subject re. about water/moisture in the exhaust. If this is true then it seems to be a built in fault. Number 4 is the crank position sensor (known as engine speed sensor) This is what the crank position looks like on the C3 EB0 engine Interestingly, the part number changed, hence a modification on 2 February 2014 production. 1.0i VTi (EB0 engine) OBD2 Code P0338 Citroen definition: The Crankshaft position sensor also known as the crank position sensor is an electronic device used in an engine to record the rate at which the crankshaft is spinning. This information is used by the Powertrain Control Module (PCM) or Electronic Control Module(ECM) to control ignition and fuel injection. Citroen C4 - Anti Theft / Engine won't crank. My partner inherited a bit of an untidy Citroen C4, 1.6 diesel 08. No problems for the first two months, then when my partner was away for the weekend she was under the impression that the battery was flat as it wouldn't start. She tried jump leads, but that didn't work, but a friendly person with Mods please feel free to move this thread if there is a better spot for it. I am working on a 2012 Prinoth snow-cat. It has a Cat 4.4 Acert in it that was built with no exhaust after-treatment. The unit has 460 hours on it. Its been properly serviced and stored each summer with fresh oil in the engine. Location. Bothell, WA. TDI. 2004 BEW. May 19, 2015. #1. Popped a code and had it scanned. Shop said it was the engine speed (crank position sensor) The car wouldn't start and then did after some trying. Also, car will die for no reason while pulling away from a stop and shudders frequently while on the high way. Ran diagnostic on it and got clutch actuator position sensor fault. At 80000 miles there's no point in changing this part on its own as it is major surgery to remove the gearbox so while its out you'll need to do the clutch and flywheel as well or in a couple of months you'll be taking it all out again. The auto elec is stumped. The only code is: ECU mute - 000. No codes beginning with p and no codes for abs fault!! I'd guess he's using a generic OBD reader - Lexia or Diagbox is needed to read the PSA specific codes. The nearest I can guess is "U1000 - The engine ECU does not communicate any longer on the system." Note - it is a guess. Hi .

citroen c4 crankshaft sensor fault