P1471 code help needed

[shaun1983m]

Hi all I’m after some help again I have 2 codes showing on my car and wondering if anybody can help it’s a 2008 2.0hdi c4 Picasso the 2 codes are

p1471 citroen electrodrive fan 1 operational failure dpf regen incomplete

P1351 ignition coil control circuit high voltage

I think the second one maybe glow plug related but the first when I google it comes up with egr not what the description says any help would be much appreciated thanks

[GiveMeABreak]

Fault Code:	P1471
Description of Fault:	Throttle housing electrovalve control (EGR)(Principal air meter): Throttle open. Detection of an open circuit (For 100 ms). Conditions of activation of the diagnostics Battery voltage more than 7V EGR butterfly command between 10 and 95%
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	Inhibiting of the diagnostics and air flow sensor plausibility Cut of all the actuators Inhibiting of the initialisations of the EGR electric valve position
Symptoms:	Jerking/stalling Lack of power
Suspect Areas:	Air mixer Electrical harness Connector

P1351 is a common fault meaning the glow plug relay is active when the engine ECU is commanding it off. This can mean either a faulty relay or glow plugs - but as it won't affect starting unless in extreme conditions. However the glow plugs to assist with regeneration of the particle filter by raising engine temperature on occasion when requested by the engine ECU.

[shaun1983m]

Thanks i might sound stupid here but does this mean it’s either a new egr valve or the wiring to it maybe

[GiveMeABreak]

Not necessarily, I would be checking the MAF, and all electrical connections as mentioned above.

[shaun1983m]

Ahh I read it wrong thought air mixer was egr

[Jay-Bruce]

P1471? I thought that was when the engine was trying to see who called it last?

[shaun1983m]

Not necessarily, I would be checking the MAF, and all electrical connections as mentioned above.

Hi again have replaced the maf now I’m getting more codes come up this bloody car is doing my head in any more help would be much appreciated the new codes are p1693 p1403 p1404 p0238 Thanks

[GiveMeABreak]

Fault Code:	P1693
Description of Fault:	Controlled engine starting and stopping: Starting or stopping requests absent or not valid. Request for starting; Engine stopped: absent; Not valid: For 150 ms.
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	-
Symptoms:	-
Suspect Areas:	CAN network Electrical harness

Fault Code:	P1403
Description of Fault:	Additional heating relay control fault 1: Circuit to earth; Short circuit to positive; Open circuit; Actuator malfunction. Short circuit to earth or short circuit to positive or open circuit: Actuator malfunction (For at least 2 seconds). Conditions of activation of the diagnostics: Battery voltage more than 7V No error on BUS internal to the engine management ECU
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	-
Symptoms:	Additional heating element
Suspect Areas:	Connectors of the additional heating element Engine ECU Electrical harness Relay

Fault Code:	P1404
Description of Fault:	Additional heating 2 fault: Circuit to earth; Short circuit to positive; Open circuit; Actuator malfunction. Description of the diagnostics: Short circuit to earth or short circuit to positive or open circuit: Actuator malfunction (For at least 2 seconds). Conditions of activation of the diagnostics: Battery voltage more than 7 V No error on BUS internal to the engine management ECU
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	-
Symptoms:	The passenger compartment heating is considerably degraded
Suspect Areas:	Additional heating element Connector Relay Electrical harness Engine ECU

Fault Code:	P0238
Description of Fault:	Turbocharger pressure signal: Short circuit to positive. Voltage of turbo air pressure signal higher than 4,80 V (Turbo pressure greater than 2530 mbar) ; For 2,5 s or 125 engine revs.
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	Deactivation speed limiter until the next time the ignition is switched on Deactivation cruise control until the next time the ignition is switched on Cutting of the EGR valve : Fuel flow limitation Deactivation of the regulation of the turbocharging
Symptoms:	Lack of power Slightly higher fuel consumption Noise
Suspect Areas:	Turbocharging pressure sensor Turbocharger position copy sensor Turbocharger blocked in position : Maximum turbo Turbocharger : Damaged Turbocharging pressure sensor

[shaun1983m]

Thanks looks like a bloody lot have you any idea on where to start looks like it could be very expensive at the garage ?