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The exhaust gas recirculation system (EGR) is an emissions control system that recirculates some of the exhaust gas back into the intake in order to re-burn any excess fuel vapor that leaves the engine. It is basically operated by a valve to control circulation. "Valve lift insufficient" means that the valve is not opening enough to circulate exhaust gas as much as the engines computer deems necessary. The vehicle will not pass an emissions test in this condition.
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98 Honda Prelude error code P1491?
Code P1491 Means: EGR Valve Lift Insufficient Detected EGR Valve needs to be replaced
What is 401 acura code on 98 2.5 tl?
That's your EGR valve flow is insufficient. Replace the EGR valve.
What does the diagnostic trouble code p0401 mean on a 1999 Chevrolet Malibu?
Trouble code P0401 means: Insufficient EGR Flow Detected Replace the EGR valve
What does the diagnostic trouble code P0401 mean and how do you repair it in a 2000 impala?
Trouble code P0401 means: Insufficient EGR Flow Detected Replace the EGR Valve
1999 chrysler town and country what causes EGR error code insufficient flow?
Plugged egr tube or a failed egr valve.
How can you correct EGR flow insufficient on a 1999 Honda accord ex V6?
An EGR valve can be cleaned. Remove the EGR valve, then flush it with carburetor cleaner. Allow the unit to dry then reinstall.
How do you replace the EGR valve in a 1996 Lexus ES300 to resolve 'insufficient flow' and 'check engine' message?
P0401 "egr insufficient flow" can indicate many things, including: 1-vacuum line plugged or leaking 2-pipe from exhaust to egr valve plugged 3-pipe to vacuum modulator valve from egr valve plugged 4-passages at egr are plugged 5-bad egr valve 6-bad EGR VACUUM MODULATOR VALVE I tried cleaning egr modulator valve, (beside/above egr)removed and tested egr vacuum & movement, inspected and cleaned all vacuum lines openings and pipes. All above did not work. I replaced the egr vacuum modulator valve. Light went out without a reset in about 30 miles of driving. Not sure if this valve can be cleaned. Retails for $69.US
What does error code P0401 in acura 1996 3.2tl mean?
P0401 means insufficient EGR valve flow. It does not matter what make or model of car is involved.
What is the meaning of Computer code p0401 in a 1999 ford f150?
might be the EGR VALVE insufficient flow
How do you repair p0401?
The exhaust gas recirculation (EGR) system has insufficient flow. It could be caused by the differential pressure feedback EGR sensor being faulty, there t is a blockage in the EGR tube (most likely from carbon buildup), the EGR valve is bad, or the EGR valve may not be opening.
What is the fix for code p0401 on 2004 suzuki xl-7?
Insufficient EGR (exhaust gas recirculation) valve. Suggest you replace the valve.
P1491 EGR Valve Lift Insufficient Detected how do i fix this problem?
depending on your mileage, if you have less than 80,000 miles or car is not older than 8 years old the dealer will actually fix it for free. Honda extended the warranty for that. if not it gets complicated you have to remove the intake manifold and drill out the egr passage then replace the valve.
