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Renault Megane 1.9 F9Q812 2005 - MIL on, code P0487 EGR position sensor circuit - Fixed #

Posted by Dave Emm on December 18, 2012, 8:17 pm

Year of Manufacture *: 2005
Engine Size and Code *: 1.9 F9Q812
( Optional ) Scanner Used: Verus

This vehicle came in with mil lght on, code stored P0487 EGR Position sensor circuit micro breaks-current, new EGR fitted,mil stayed off on 10 mile road test but then returned when engine was restarted.Have checked wiring as far as possible with out stripping out to much.Just wondered if anyone has any advise or knows if the EGR should be coded to the ECU before I spend time on an in depth examination of the wiring. Thanks Dave.

Re: renault megane engine management light on

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on December 18, 2012, 11:25 pm, in reply to "renault megane engine management light on"
Kevin Apps

Dave

Coding or adaption deletion would depend on what version of EDC 16 C3 is fitted (and there are many).

Kev.

Re: Renault Megane 1.9 F9Q812 2005 - MIL on, code P0487 EGR position sensor circuit #

Posted by Chris Angus <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5111' width='330' height='300' border=0 style='border:none;'> on December 19, 2012, 12:48 pm, in reply to "Renault Megane 1.9 F9Q812 2005 - MIL on, code P0487 EGR position sensor circuit #"

Did you clean out the ports properly, it could be a flow restriction and the ecu just isn't happy about the egr position it expects to see?

Chris

Re: Renault Megane 1.9 F9Q812 2005 - MIL on, code P0487 EGR position sensor circuit #

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on December 19, 2012, 1:43 pm, in reply to "Re: Renault Megane 1.9 F9Q812 2005 - MIL on, code P0487 EGR position sensor circuit #"

usually it is EGR adaptions relearn

Fixed #

Posted by Dave Emm on December 23, 2012, 12:14 am, in reply to "Renault Megane 1.9 F9Q812 2005 - MIL on, code P0487 EGR position sensor circuit #"
Message modified by board administrator January 25, 2013, 3:23 pm

After a lot of head scratching opened up the lume at the front of the engine where it branches into four and found that two wires had chafed through their insulation on the inside of the plastic trunking,one from the egr and one from the valve that operates the intake flap.I think they probably touch together momentarily when the engine cranks, hence the code being set almost always on startup.Thanks to all who replied.

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