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Emisions failures failed with the codes of P0756 and P0401 any ideas what they are and what it might ot cost to get fixed

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Catalytic converter ineffeicentcy and o2 sensor moderately expensive but cheaper than anew car payment : )

Posted on Jun 12, 2008

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HOW TO FIX VEHICLE WITH OBD CODE 0650


DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient - Probably has plugged passages . Take the EGR valve off the vehicle an clean the passages out .

May 17, 2016 | 2000 Pontiac Grand Prix SE

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How do you clear a blocked exhaust when code says insuffient emisions


egr valve bad,P0401 OBD-II Trouble Code Technical Description Insufficient EGR Flow What does that mean? EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR. Symptoms You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms. Causes A code P0401 most likely means one or more of the following has happened: The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced There is a blockage in the EGR (tube), most likely carbon buildup The EGR valve is faulty The EGR valve may not be opening due to a lack of vaccuum Possible Solutions In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit. Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open Clean out the EGR valve and/or tubing to remove deposits Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model) Replace the DPFE sensor (with a good quality / OEM one) Replace the EGR valve Related EGR codes: P0400, P0402, P0403, P0404, P0405, P0406, P0407, P0408, P0409

Read more at: http://www.obd-codes.com/p0401
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May 31, 2015 | Cars & Trucks

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Why does my 2002 Acura Rl have a error code of P0401


P0420-catatytic convertor failure Replace convertor
P0401- EGR flow insufficient-Clean EGR passages
P0730-Faulty transmission shift control-Get diagnosed

Jun 01, 2014 | 2002 Acura RL 3.5

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2001 chevy impala error code P0756


That code is for the transmission. It indicates a mechanical failure within the transmission. There is a technical service bulletin issued by GM in regards to it. TSB# 01-07-30-036C. If the car is under warranty GM will fix it. If not, cost of repair will has to be paid by you. This issue is related to 2nd and 3rd gears, could has debris in orifice #29 inside transmission.

Nov 07, 2013 | 2000 Chevrolet Impala

1 Answer

Kia amanti code P0401


A code P0401 most likely means one or more of the following has happened, the DPFE sensor is faulty and needs to be replaced etc----------------------------------------------------------------------------
Code Reader Scanner tool

Mar 29, 2013 | 2005 Kia Amanti

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I have a 96 explorer 4.0 4wd, failed emissions DTC codes P0125, P0756, P0340....are these costly repairs?


P0125 is Insufficient Coolant Temp For Closed Loop Fuel Control

P0756 is Shift Solenoid B Performance or Stuck Off
P0340 is Camshaft Position Sensor Circuit Malfunction

The P0125 can probably be cleared by replacing the thermostat. That part is under $15.00
The P0340 can probably be cleared by replaceing the Cam position sensor. That part is about $25.00

The P0756 is a transmission issue and It will involve removing the fluid pan and taking out the valve body to get to the solenoid.

The thermostat and cam sensor should take about an hour of shop time to change so I would figure about $150.00 to $200.00..Depends on the shop and if there is a minumum charge. Some shops charge 4 hrs. min.

the trans issue may get involved so I don't really want to make a guess, but I would say less than $500.00, depends on what all is involved in getting to the solenoid and changing it.

Jan 17, 2011 | 1996 Ford Explorer

3 Answers

96 ford explorer failed emissions test with codes p0401,p0402,p0755,p0756


P0401
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

P0402
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor (DPF). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0402 code means that OBD detected an excessive amount of EGR.

There sound like a bad EGR and need replace it.

P0755 Shift Solenoid B Malfunction and P0756 Shift Solenoid B Performance or Stuck Off. First I suggtes check leve fluids and preventive maintenance.

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Sep 02, 2010 | Ford Explorer Cars & Trucks

3 Answers

Errors P1684 given, how do I fix


The first code, p1684, just states the battery has been dis-connected in the last 50 start cycles.
Code p0401 is the EGR flow. You may need to replace the EGR valve.
Code p1193 is the intake air temperauture ( IAT) sensor. It may also need to be replaced.
Have your mechanic take a look at those, and please let me know how it goes.

Feb 11, 2010 | 2001 Chrysler PT Cruiser

1 Answer

Failed Emision test


po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

Sep 01, 2009 | 2001 Dodge Caravan

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