Disgnostic code meaning

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P1404 Code - What Does It Mean & How To Fix It

OBD2PROS https://obd2pros.com > Complete List of OBD2...
A P1404 code is not considered serious. The vehicle will run, but with decreased performance however, you should have it looked at right away. If the vehicle is ...

‎Meaning · ‎Common mistakes

P0404 OBD-II Trouble Code: Exhaust Gas Recirculation ...

YourMechanic https://www.yourmechanic.com > Articles
P0404 is a diagnostic trouble code (DTC) for "Exhaust Gas Recirculation Circuit Range/Performance". This can happen for multiple reasons and a mechanic ...

Error Code P0137: Oxygen Sensor Circuit Low Voltage B1S2

AutoZone https://www.autozone.com > diagnostic-trouble-codes
Specifically, the diagnostic trouble code P0137 yields the following message: "O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)." Here's what that means: Your ...

‎What Does the Code P0137... · ‎What Are the Symptoms of a...

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The P0513 is a bad immobilizer code, which is part of the security system. Apparently a bad code can cause the engine to run rough, which could be causing the other code. P0404 is an EGR code.

07 Chevy Equinox shows codes P1779 C0561 P0404 P0405 How to fix

when codes are set it does not mean a part is defect ,there is wires connect to it. EGR solenoid are 3 solenoid with 3 holes one 1/7orifice: second is 2/7 third 4/7 pcm command those solenoid to obtain the right amount of exhaust but P0404 said performance is bad and P0405 said circuit A is low or 0volt . pull wire one by one see if it bounce mean wire is cut inside

The EGR valve is located on the firewall side of the throttle body.



I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

turbo is carboned up in the vanes

I have a 2005 6.0 liter powerstroke f-250 with P0404 and P0405, I have tried cleaning the egr valve and reset the code worked fine for a little while then the codes came back. Any Idea what's going on?

404 is exhaust gas recirculation circuit, and 405 is exhaust gas recirculation sensor circuit low. EGR sensor or ground?

Check for

vacuum leaks on intake manifold,

the air tube between the air filter.

intake manifold vacuum hose.

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clean throttle plate with Berryman carburator cleaner

SEE sample picture HERE
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Also remove carbon built up behind the EGR valve and the EGR passage tube.

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Vacuum leak WILL offset the intended 14.7 to 1 air fuel ratio.

More un-metered air (leaks) will lean out the fuel mixture.

Use small amount of Berryman carb clearer at potential air leak area will help you identify trouble spot.

At idle,just spray and listen for the RPM surge.

The in-rush of carb clearer will increase the RPM on the motor.

Record the problem spot(s) and address it later.

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EGR carbon built up require 2+ hours to clean from start to finish.

You will need a new EGR base gasket before your start.

Locate and remove the EGR valve after the vehicle is cool down.

Carefully record the connector and vacuum line (for older vehicle) location by drawing an easily to follow diagram.

Remove the EGR valve.

Inspect the location of the carbon built-up inside the valve and the EGR passage tube.

SOAK these areas with WD-40 spary.

You will need a small screwdriver,cloth hanger and lot of newspaper and time to get this cleaning done right.

RE-SOAK the carbon and let it sit for over-night will also help.

One the last round,pass a shop vacuum of the EGR valve and the passage pipe.

Install the new EGR gasket and connectors.

Allow the vehicle to warm up outdoor to burn up any remaining WD-40.


Take it for a test drive.


Please rate my answer if it's useful to you.


Cheers,

Mustgo

Erase the code and see if it returns. If it does, replace the valve. What engine do you have? If it is a 3.4 it should be right on top. One plug and two bolts.