My check engine light and vtm light are on in my 2008 Honda Pilot I checked the codes it's saying the egr valve is bad would that cause the Vtm light to come on to

wow no engine told at all.nor VIN, double wow
cylinder bank shut downs are a feature to save fuel and is complex
read why here/.
part of VVT and guess what bingo that, may be failing.

https://www.obd-codes.com/p3400

If the VTM-4 system on your 2006 Honda Pilot is not working, it is likely that there is a problem with the system or one of its components. Here are a few things you can try to troubleshoot the issue:

1. Check the VTM-4 switch: Make sure the VTM-4 switch is in the correct position and that it is functioning properly. If the switch is damaged or not working properly, it may prevent the VTM-4 system from engaging.
2. Check the VTM-4 fuse: The VTM-4 system is powered by a fuse. Check the fuse to make sure it is not blown and that it is securely seated in the fuse box.
3. Check the VTM-4 relay: The VTM-4 system uses a relay to control the power to the system. Check the relay to make sure it is not damaged and that it is functioning properly.
4. Check for other issues: There could be other issues with the VTM-4 system, such as a malfunctioning control module or a problem with the drivetrain. In this case, it is best to seek the help of a qualified mechanic who can diagnose and fix the problem.

I hope this information is helpful. If you have any further questions or need additional assistance, don't hesitate to ask.

Honda Guy had this to say;
When operating normally your VTM-4 light means the vehicle is in traction control mode. HOWEVER, if the light just came on when you were driving it is an indication that you have a problem with the engine that is causing the VTM system to think the vehicle is in traction control mode because of a loss of engine power or misfire.

Here's how that happens: on a Honda, the way the vehicle restores traction is by reducing engine power to the point where the wheels don't spin as fast and thereby restores traction to a slipping wheel (slipping wheels spin faster than the other wheels). Conversely, when there is a reduction in engine power that is abnormal, the VTM system "thinks" that the engine power is being reduced to restore traction and it triggers the light.

In almost all cases, the light is being triggered by an idle speed control valve malfunction or in some cases by an EGR valve malfunction. It may or may not turn on the check engine light. This problem was fairly common on Pilots in 2004 and 2005 but certainly isn't limited to just those years.

Take the car to a Honda dealer or to a mechanic and have them check for stored codes in your powertrain control module. I think you're going to find that there is a code for an idle speed control valve malfunction or an EGR valve malfunction. The idle speed control valve is warranted for 8 years or 80,000 miles; the EGR for 3 years or 50,000 miles. Your Pilot is probably still in warranty and if so the repairs would be made at no charge

hope that helps
https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=video&cd=1&cad=rja&uact=8&ved=0ahUKEwj6m4uf2K7KAhXCXD4KHb_QB9YQtwIIJDAA&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D6ly6_UdyRPA&usg=AFQjCNHHIpyY0Issg7_9VC0vUY3AckF55A&bvm=bv.112064104,d.cWw

the computer will store any codes until cleared. you can clear the computer memory by disconnecting battery for 1 min. but the code may reset if there is a true problem and not just a momentary anomaly.

That is a knock sensor code. It is in the valley below the intake. Rodents like to eat the wires to it, look for that. The sensor can fail, too.

Hi, An '09 should be under warranty or I'd least take it in and 'nicely' ask that it be covered under warranty.

This LINK may help w/the VTM-4 info...but not sure about the EGR.

GL,
Td

Apparently what has most likely happened is you were on a wet or ice road and may have lost traction on the road. You may have never even noticed, but your vehicle did. The vehicle compensated for the road condition & probably revved the engine a little to low, which probably turned on the check engine light. This is a scenario only.

The best way to find out what's wrong is to have the computer scanned for trouble codes. The trouble code will point to the problem. Several auto parts stores will do this for free or rent you a scanner so you can scan it yourself. If the code isn't obvious or you need more help you can come back here and I'll walk you through figuring it out.

It also could be you need to change the rear differential fluid. There was a TSB for this vehicle. I am not sure if your vehicle falls into it. You could check with the dealer as well.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day

If it says VTM-4 that is your VTM-4 indicator:

This indicator normally comes on for a few seconds when you turn the ignition switch to ON (II). If this indicator comes on at any other time, there is a problem in the 4WD system. Have your vehicle checked by a dealer.

The Variable Torque Management 4WD System (VTM-4) automatically transfers varying amounts of engine torque to the rear wheels under lower traction conditions.

You can try the following:

To Disengage the VTM-4 Lock, do one of the following:

1. Press the VTM-4 Lock button.

2. Move the shift lever to D or D .

3. Turn the ignition to LOCK (0).

The VTM-4 Lock will temporarily disengage when the vehicle speed exceeds 18 mph (30 km/h). It will automatically engage again as the speed slows below 18 mph (30 km/h). The button light will remain on.

Hope this helps you understand the light. If not, leave a comment and I will try to help you further.

Sounds like the EGR valve's gone. Not a terribly expensive fix.

Bring it to a dealer immediately. VTM-4 means the 4WD is off, possibly because of the engine line or vice versa.