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P0400

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P0400 OBD-II Trouble Code: Exhaust Gas Recirculation Flow Malfunction
P0400 code definition Exhaust Gas Recirculation Flow Malfunction What the P0400 code means P0400...

Related questions

Question
Check Engine Light coming on after repair to fix it
Some of these vacuum-operated EGR systems that your vehicle has can be a little tricky. There are a few different solenoids, and they can be hard to isolate and test to find the bad component. In addition to the solenoids,...
Question
I have codes P0151, P0171, and P0174. I have changed out my O2 sensor, but now I have all these codes
Hey there. The codes you have downloaded simply relate to malfunctions in the "engine management system." It appears codes were set for oxygen sensor voltage out-of-range, possible EGR (exhaust gas recirculation) problems such as a blockage, and a generic code...
Question
1998 Mazda protege: Had the EGR valve replaced, cleared the computer codes, still get the check engine light then a EGR problem co
Code P0400 does not necessarily mean that there is something wrong with the EGR valve itself. The only way to condemn the EGR valve is to directly test it. In particular Code P0400 includes a circumstance where the EGR passages...
Question
P 0400 error
Diagnostic Trouble Code P0400 can set if the EGR valve is faulty but other causes for code are a break in the vacuum line to the EGR valve, a faulty EGR temperature sensor, or carbon deposits and blockages in the...
Question
Why is it still misfiring?
Hi there. Check the Exhaust Gas Recirculation valve on the engine. It seems to be sticking on when the engine is running at low idle and causing a misfire as the old exhaust that is burnt is reentering the engine....

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