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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Other Comments

P0304 ponijac po304

P0304 po304

P0327 Replaced both knock sensors on 2002 chevy pickup 5.3 liter engine. was showing code for knock sensor 2. now after replacement showing 0327 for knock sensor 1. Seems to be running a lot better since replacement but throwing a code.

P0660 P0660

P0704 p0077



Other Check Engine Light Codes

P0124   Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
P0155   O2 Sensor Heater Circuit (Bank 2 Sensor 1)
P0209   Injector Circuit - Cylinder 9
P0214   Cold Start Injector 2
P0240   Turbo/Super Charger Boost Sensor 'B' Circuit Range/Performance
P0379   Timing Reference High Resolution Signal 'B' No Pulses
P0505   Idle Control System
P0647   A/C Clutch Relay Control Circuit High
P0798   Pressure Control Solenoid 'C' Electrical
P0934   Hydraulic Pressure Sensor Circuit Low




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