Question about 2006 Toyota RAV4

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Engine light on get trouble codes p.o. 300 p.o. 302 and EGR valve code

Engine running good just get the trouble codes above

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  • 305 Answers

Ok you have there a random misfire,and a misfire on #2, now there may be and open or short wire connector in the engine wire so you have to check the wires for any corrosion sometime its like a blister with some battery looking acid corrosion,then you must check your vacuum hoses for leaks also check your injectors,fuel pressure,clean your MAF with the right spray,then check your compression,i would also change the coolant temp/sensor,check your timing and get your ECM check,sometime it can be a bad coil so check them aswell

Posted on Feb 05, 2015

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6ya6ya
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Posted on Jan 02, 2017

motor1258
  • 6674 Answers

SOURCE: OBD code 0401 (1997 Toyota Camry 4 cyl)

There is a VSV (vacuum switching valve) , usually mounted on the back side of engine block, under the intake manifold, as well as the map sensor, that can also cause that code if one or the other is faulty. It takes some pretty detailed troubleshooting to confirm this in some cases, so if that's not in your line of work, you may have to have it properly diagnosed, or take a 50/50 shot at which one first.

Posted on Jan 24, 2009

san luis
  • 11 Answers

SOURCE: 94 camry engine light on, code 71, how do i fix it

That is your Exhaust Gas Ricirculation system malfunction that you got, this part has to be replaced it costs between $130 dollars to $140 depending on the part store you go to.

Posted on May 05, 2009

  • 14 Answers

SOURCE: Code P0401 toyota Camry 3.0 v6

replace the vsv that has the vacuuum hose running from it to the egr valve

Posted on Jun 05, 2009

toneman2121
  • 775 Answers

SOURCE: check engine light on-code says egr valve is bad

the egr system consists of control circuits as well as the egr valve itself. troubleshooting will have to be performed in order to pinpoint the fault. the valve may just need cleaning. there may be damage in the long run since the egr system introduces exhaust gas to the air intake to reduce combustion temperatures.

http://www.aa1car.com/library/egr.htm

Posted on Apr 21, 2010

redds55
  • 2620 Answers

SOURCE: 2000 toyota camry code p0401 change egr valve

First did you reset the computer after replacing the EGR valve if you don't the computer doe'nt reconize the new sensor so it doe'nt reset the peremiters.Then check all passages and lines in the intake manifold there could be a clogg somewhere.Go to www.rockauto.com and you'll find EGR pressure sensor for under $30.00.

Posted on May 17, 2011

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2 Answers

Where is the egr valve on a 99 Ford expedition


The EGR valve is in a very difficult spot to work on. If the EGR is bad it will set off the check engine light and make the vehicle run rough or stall at idle. It really doesn't make it run rough while driving or accelerating. What are the conditions when the car runs rough?

Mar 01, 2014 | 1999 Ford Expedition

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97 malibu with a 3100 engine - it dies if you let off the gas - so it won't idle - but runs fine as long as you are giving it gas


idle air control motor is most likely not working . sometimes you can clean them out with intake cleaner spray or you may need to replace it . also look for vacuum leaks . another possible problem is a egr valve stuck open .i would think the engine light would have come on if that was the case for the egr valve

Nov 05, 2013 | 1997 Chevrolet Malibu

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I have a 1998 ford escort with a check engine light on and can't get it off


Here is a list of possible causes. Some things you have already done.

EGR solenoid valve harness is open or shorted
- EGR solenoid valve circuit poor electrical connection
- EGR volume control valve stuck closed
- Faulty EGR Pressure sensor
- Faulty EGR temperature sensor and circuit
- Faulty EGR Valve
- EGR passage clogged
- Exhaust gas leaks
Read more: http://engine-codes.com/p0401_ford.html#ixzz28fATCih2

Oct 07, 2012 | 1998 Ford Escort

1 Answer

P0174 p0402 p1150 p1151 and p0401


Hi there:



P0401 OBD-II Trouble Code - Insufficient EGR Flow
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.


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




P0402 OBD-II Trouble Code - Exhaust Gas Recirculation Flow (EGR) Excessive Detected
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.


Symptoms: You may notice drivability problems such as the engine may surge off idle. There may also be other symptoms.


A code P0402 most likely means one or more of the following has happened:
The DPFE (differential pressure) sensor is faulty and needs to be replaced
There is a blockage in the EGR (most likely carbon buildup)
The EGR valve is faulty
The EGR valve may not be opening due to a lack of vaccuum


Possible Solutions: with a P0402, it is common for people to replace the EGR valve, only to have the problem return. The most likely solution is to replace the DPFE sensor.


Check the voltage at the DPFE sensor both at idle and when the EGR is open
Replace the DPFE sensor

P1150 OBD-II Trouble Code - Air/Fuel Sensor Circuit Range/Performance (Bank 1 Sensor 2)


P1151 OBD-II Trouble Code - Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2
upstream is considered the oxygen sensor for the right side exhaust manifold, before the catalytic convertor. Make sure the sensor's electrical connection is in good condition. On the sensor, test between the terminals with an multimeter/ohmmeter. You should see about 6 ohms at 68*F. If not, replace.

The reason your engine is doing that is because the sensor is failing in such a way that the computer is dumping in extra fuel when it isn't really needed. Then you get the black smoke.





Hope this helps.

Jun 08, 2012 | Cars & Trucks

2 Answers

Check engine light on


Diagnostic Trouble Codes OBD1
Mazda 02 Crank Position Sensor (NE Signal). 03 Cam Position Sensor (SGC Signal). 05 Knock Sensor. 08 Air Flow Sensor. 09 Engine Coolant Temperature Sensor. 10 Intake Air Temp. Sensor (Air Flow Sensor). 12 Throttle Position Sensor. 14 Barometric Absolute Press. Sensor. 15
and/or
23 Heated Oxygen Sensor (Inactivation). 16 EGR Function Sensor. 25 Pressure Regulator Control Solenoid Valve. 26 Purge Control Solenoid Valve. 28 EGR Vacuum Solenoid Valve. 29 EGR Vent Solenoid Valve. 34 Idle Air Control Valve. 41 VRIS 1 Solenoid Valve. 46 VRIS 2 Solenoid Valve.

Jul 12, 2010 | Mazda 626 Cars & Trucks

1 Answer

Engine light on code reads po401


I believe this code is insufficient EGR flow. On this engine, the passages to the EGR valve often become carboned up and cause this code. Remove the EGR valve and inspect the passages to see if they need to be cleaned.

Jun 14, 2010 | 2006 Ford Mustang

1 Answer

Service engine code indicates EGR valve.


You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.

Mar 28, 2009 | 2001 Chevrolet Lumina

1 Answer

96 Mazda B2300 when motor is cold runs ruff and stalls until warm


It could be the EGR valve and a bunch of other things. Your truck is new enough it supports OBD-II. You'll need to get the trouble codes read from the truck's computer and that will tell you more information about where the problem lies. Don't guess, get those codes and do a proper diagnosis. You can look up the codes at http://www.check-engine-light.com Good luck!

Dec 22, 2008 | 2007 Mazda B2300

1 Answer

1994 Buick Lesabre, Traction Control Light


U will have to run the tests for the trouble codes from both lights, they are unrelated, but chances are the CEL is the same problem, the EGR valve, in any event without the trouble codes there are far to many things to turn either light on to venture a guess, that kind of diagnosis costs allot of your money.

Dec 15, 2008 | 1994 Buick Park Avenue

1 Answer

Hard Start with trouble code 32


You should have your battery checked, it may be getting old and doesn;t have as much cold cranking power, I don;t think code 32 has anything to do with the slow cranking when cold.


Trouble Code 32 indicates that the Exhaust Gas Recirculation (EGR) valve diaphragm is not where the ECM expects it to be. The ECM controls the diaphragm with a Pulse-Width Modulated (PWM) waveform. The EGR has a vacuum bleed solenoid that adjusts the vacuum applied to the EGR valve based on this pulse width. If there is sufficient vacuum at the EGR valve, a switch closes to send a signal back to the ECM. The absence of this signal is the bases for code 32.
The conditions for setting this code are:
  • no vacuum to EGR (switch open), and
  • Code 33 or 34 (MAF error) is not present, and
  • engine running and LV8 is less than 100, and
  • coolant temperature is > 118 deg F (48 deg C), and
  • the EGR solenoid duty cycle is < 65%, and
  • the above conditions are met for more than 25 seconds


Typical causes for this code include:
1) Faulty EGR valve-to-ECM connection
2) Plugged EGR passages and/or sticking EGR valve
3) Defective EGR valve
4) Defective ECM

May 25, 2008 | 1994 Chevrolet G20

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