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Fault code P0409

After sales description of the fault:
	EGR valve : Valve detected jammed closed during the ECU switching
	to dormant mode phase

Description of the diagnostics:
	Sticking of the EGR valve in the low position detected by the
	impossibility of reaching 90 % in 1 second

Conditions of activation of the diagnostics:
	Just after switching off the engine, without restarting within 1 min

Conditions of disappearance of the fault:
	Start the engine and let it run for 4 min, then stop the engine and wait
	for the engine ECU to go into sleep phase for 1 min

Main customer complaints likely:
	Starting problem
	Jerking/stalling
	Lack of power
	Suspect areas EGR valve
	Electrical harness
	Connectors
	
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Fault code P0489

After sales description of the fault code:
	EGR valve : Position incorrect (too open)
	Description of the diagnostics The position measured is less than the reference by more than 15 % for 5 seconds

Conditions of activation of the
diagnostics:
	engine running

Conditions of disappearance of the fault:
	Driving for 5 minutes remaining under an engine speed of 4000 rpm at half load

Down-grade modes if fault present Closing of the ECU valve:

	Irreversible deactivation of the vehicle speed limiter
	Irreversible deactivation of the vehicle cruise control
	Deactivation of taking account of the tight spot information
	Switching of the turbocharging pressure regulation to controlled mode
	Switching to fuel "normal reduced flow" mode
	Deactivation of the request for regeneration of the particle filter from the diagnostic tool
	Deactivation of the "easy-move" (electric parking brake) functionality
	Function for limitation of the static torque for the protection of the gearbox

Switching on of the warning light and/or warning message
	Warning lamp MIL
	Warning lamp SERVICE
	
Main customer complaints likely Jerking/stalling
	Smoke from the exhaust
	Noise
	Lack of power
	Starting problem
	Problem with automatic restarting of the internal combustion engine 

Suspect areas:
	EGR valve
	Electrical harness
	Connectors