P0400 OBD Engine Code Logo   Code #P0400 -
Exhaust Gas Recirculation Flow

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Nissan Altima
Failed emissions test


P0217

po400

engnine cut off

Cadillac Brougham
It came on two weeks Monday and went off one week later and it came back on two days ago.


No symtons car runs fine, the check engine light is on. I don't know what to fix,.

Suzuki XL7
error p0400


Mitsubishi Montero Sport
check engine light came on 3 days ago cars rides sounds great like theres no problem changed the egr valve and it did not fix it checked all the vacuum hoses and they are good


Toyota Avensis
P0400 fault code. New EGR Fitted, inlet manifold removed and cleaned. Flow pipe through cylinder head cleaned. Car runs fine, no loss of power or cutting out.


irepleace the egr valve and now mi van works good but the code p0400 apears i don't feel any troulbe any more what nao?

missing vacuum line to elbow fitting on purge vac. diognostic switch. is this hose needed

Check Engine light on.

Nissan 240SX
code po 400


runs god excheng oxygen sensors show po 400 code

Mercedes benz ml320 year 2001

Mercury Villager
Car shakes and rougf idle


Mazda Millenia
KEEP GETTING CODE P0400


Toyota Camry
p0400


P0400

Saab 9-3
p0400 egr flow malfunction


Toyota Avensis
Exhaust flow recirculation


p0400

Suzuki Grand Vitara
Idles roughly and little less power.


Nissan Frontier
p0400


Mercedes-Benz S430
No symptoms detected by driver other than the error code


Mitsubishi Eclipse
reduced power


Idea to fixe

Mercedes-Benz E320
p0400 how to fix


Saab 9-3
PO400 keeps coming on despite cleaning EGR and the solenoid and removing all carbon. Solenoid works fine as I checked with 12 battery when off the car. No idea what to do next!


CORRECION DE FALLA CODIGO P-0400

CORRECCION FALLA CODIGO P-0400 EN MONTERO DAKAR 2001

Mercedes-Benz C230
p0400


P0400

Nissan frontier



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Does your Car Vibrate? Shake?
Does your Car Idle Roughly? Reduced Power?

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Other Comments

P0638 po020 po0021 no symptoms

P0340 Saab 9-3
Hard Cold Start issues PO340 code replaced sensor same issue. Saab garage reckon it is a worn sprocket at the crank shaft pulley which has thrown the timing causing hard ignition when cold, checked valve timeing said it was off starts fine when heated up eveytime.


P0793 The cvt transmission is hard to shift, it jerks and the check engine like comes on. Where should I check next. Where is the senser located, in the vavle body?

P0510 Daewoo Lanos
p0510 p1513


P0851 Fhuu



Other Check Engine Light Codes

P0066   Air Assisted Injector Control Circuit or Circuit Low
P0100   Mass or Volume Air Flow Circuit
P0132   O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
P0215   Engine Shutoff Solenoid
P0545   Exhaust Gas Temperature Sensor Circuit Low (Bank 1)
P0602   Control Module Programming Error
P0605   Internal Control Module Read Only Memory (ROM) Error
P0840   Transmission Fluid Pressure Sensor/Switch 'A' Circuit
P0870   Transmission Fluid Pressure Sensor/Switch "C" circuit
P0956   Auto Shift Manual Mode Circuit Range/Performance




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