Description
OBD-II Trouble Code Description for P0403 Renault
Exhaust Gas Recirculation Control Circuit
What does this mean?
OBD2 Code P0403 Renault definition:
The Exhaust Gas Recirculation (EGR) system is controlled by a vacuum solenoid. The solenoid is supplied ignition voltage. The Powertrain Control Module (PCM) controls the vacuum solenoid by grounding the control circuit(ground) or driver. The primary function of the driver is to supply ground for the object that is being controlled. Each driver has a fault circuit that the PCM monitors. When the PCM turns a component on, the control circuit voltage is low, or close to zero. When the component is turned off, the voltage on the control circuit is high, or near battery voltage. The PCM watches for these conditions, and if it doesn’t see the proper voltage at the proper time, this code is set.
Symptoms
Possible sumptoms of OBD code P0403 Renault
Usually a fault in the control circuit, will leave no noticeable symptoms other than the Malfunction Indicator Lamp (MIL) illumination. However, if the EGR control solenoid is stuck open due to debris, etc. the code may be accompanied by misfire under acceleration, rough idle, or engine dying altogether.
Causes
Possible causes of OBD code P0403 Renault
The causes for a P0403 Renault EGR code could be any of the following: Bad EGR solenoid Excessive resistance in control circuit (PCM controlled ground) due to an open, chafing or damage to the harness Poor connection at the EGR solenoid harness (worn or loose pins) Water intrusion at the EGR solenoid harness Blockage in EGR control solenoid holding solenoid open or closed causing excessive resistance Loss of supply voltage to EGR solenoid Bad PCM
Possible Solutions
With the ignition on and engine off, use a scan tool to activate the EGR solenoid. Listen or feel for a clicking, indicating that the solenoid is operating. If the solenoid does operate, you’ll have to check current draw on the ground circuit. It should be less than one amp. If it is then the problem is intermittent. If it isn’t then there is excessive resistance in the circuit and perform the following 1. When it’s activated see if you can blow lightly through it. IF you can’t there may be a blockage causing excessive resistance. Replace EGR solenoid as needed. If there is no blockage, disconnect the EGR solenoid and the PCM connector containing the EGR solenoid control circuit. Using a digital Volt-Ohm meter (DVOM) check resistence between the control circuit and battery ground. It should be infinite. If it isn’t, then there is a short to ground on the control circuit. Repair the short to ground and retest as needed. 2. If the solenoid doesn’t click as it should, disconnect the EGR solenoid connector and connect a test light between the two wires. Using the scan tool, command the EGR solenoid on. The light should light up. If it does, replace the EGR solenoid. If it does not perform the following: a. Check for 12 Volts on the ignition supply voltage to the solenoid. If it isn’t present, inspect the supply circuit for an open, or a short due to chafing or breakage and re-test. b. If it still doesn’t operate: then manually ground the EGR solenoid control circuit. The light should light. If it does, repair open in EGR solenoid control circuit and re-test. If it doesn’t, replace EGR solenoid.
The OBD2 Code Information Be Applicable For Renault:
2013 Renault ZOE,2013 Renault Twin-Z Concept,2013 Renault Twin-Run Concept,2013 Renault Talisman,2013 Renault Symbol,2013 Renault Scenic XMOD,2013 Renault Fluence,2013 Renault Espace,2013 Renault Clio,2012 Renault Twingo,2011 Renault Megane,2011 Renault Latitude,2011 Renault Laguna Estate,2011 Renault Laguna,2011 Renault Frendzy Concept,2011 Renault Captur Concept,2010 Renault Scenic,2010 Renault Megane RS,2010 Renault Megane Estate,2010 Renault Grand Scenic,2010 Renault Fluence,2010 Renault DeZir Concept,2010 Renault Clio RS,2009 Renault Twingo RS,2009 Renault Symbol,2009 Renault Scenic,2009 Renault Safrane,2009 Renault Megane,2009 Renault Laguna GT,2009 Renault Laguna Coupe,2009 Renault Koleos,2009 Renault Kangoo,2009 Renault Clio Campus,2009 Renault Clio,2008 Renault ZE Concept,2008 Renault Twingo,2008 Renault Sandero,2008 Renault Laguna Estate,2008 Renault Laguna,2008 Renault Kangoo,2007 Renault Megane,2006 Renault Twingo,2006 Renault Thalia,2006 Renault Nepta Concept,2006 Renault Kangoo,2006 Renault Espace,2006 Renault Clio Sport,2006 Renault Clio RS Concept,2006 Renault Altica Concept,2005 Renault Z17 Concept,2005 Renault Vel Satis,2005 Renault Modus Initiale,2005 Renault Laguna,2005 Renault Clio III,2004 Renault Modus,2004 Renault Megane,2004 Renault Clio,2003 Renault Scenic II,2003 Renault Be Bop
Note:
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