P0401 Code - Exhaust Gas Recirculation Flow Insufficient Detected

What Does P0401 Mean?

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. When you see P0401 engine fault code on your engine code reader this description will help you.

engine code P0401	P0401 fix	obd P0401	dtc P0401
obd code P0401	obd2 P0401	P0401 car code	diagnostic code P0401
car code P0401	check engine code P0401	fehlercode P0401	P0401 fiat
codigo P0401	codigo falla P0401	P0401 kody b??dów	codigo de falla P0401

What are the common causes of P0401 ?

The most common causes of this code are clogged EGR passages and clogged DPFE sensor passages. You may also suspect a faulty EGR sensor, MAP sensor, faulty EGR valve, faulty EGR control solenoid, a broken vacuum line, or faulty electrical wiring (or connectors) as possible causes.

How do you troubleshoot P0401 ?

• Replacing the leaking or clogged EGR valve
• Replacing a broken vacuum line to the EGR valve or control solenoid
• Replacing an EGR temperature sensor or clean the carbon off of it to repair it if it does not register enough of a temperature change
• Cleaning carbon out of EGR tubes to intake manifold to clear any blockages

Searches related to P0401 - Exhaust Gas Recirculation Flow Insufficient Detected

• insufficient egr flow symptoms
• p0401 toyota camry
• p0401 mazda
• p0401 vw
• p0401 honda
• p0401 ford f150
• p0401 ford ranger
• p0401 toyota camry 1997