Why is my check engine light and VTM-4 light coming on when my car gets wet?

170

Asked by Apr 29, 2016 at 08:35 AM about the 2009 Honda Pilot EX-L w/ DVD 4WD

Question type: Maintenance & Repair

I have a 2009 Honda Pilot EX-L 4WD. I've noticed that when it rains or snows my check engine and VTM-4 light comes on. In about a day or so they both will go away? What could this be???

15 Answers

83,965

If this is a problem developing a code would be stored in the computer. I would say go to like Auto Zone to have it checked for codes. If there is a code, then you would know what to look at to fix the problem. You can post the code back here for the meaning and cause.

9 people found this helpful.
170

I have gone by auto part store a had code pulled. Its reading P0175 bank 1 system to rich.

6 people found this helpful.
83,965

This means...P0175 HONDA - Fuel System Too Rich Bank 2... Possible causes - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Faulty Mass Air Flow (MAF) sensor ......................................................................................................... - Fuel injection system does not operate properly. - The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.)... Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Excessive Fuel Consumption... P0175 Honda Description... With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).

7 people found this helpful.
170

Is this just a sensor I can purchase? Oxygen Sensor? I really appreciate your help!

6 people found this helpful.
83,965

Yes, more than likely the front 02 sensor, the one closest to the engine. The MAF can be cleaned with electrical cleaner at the plugin. Take apart and clean.

6 people found this helpful.
170

Awesome! Sounds easy enough... Thank you for the speedy response.

3 people found this helpful.
170

I've gone online to view this 02 Sensor. They all say " Upstream or Downstream"? Which one would I need to get?

2 people found this helpful.
83,965

Up-stream...

3 people found this helpful.
380

2005 honda pilot check engine end vtm4 on

26 people found this helpful.
380

Am driving after one my,the vtm4 on

12 people found this helpful.
70

I was told by the dealer whenever the check engine light comes on the VTM-4 light will also intermittently come on. The issue may not be related to VTM-4.

7 people found this helpful.
220

Hi I have a 04 Honda pilot and my check engine light came on and my vtm4 and it makes a cracking sound when I drive it what does that mean

22 people found this helpful.
50

Did anyone ever answer this? Mine is doing the same thing:-(

5 people found this helpful.
20

Vtm 4 light comes on my 03 Honda Pilot when driving

2 people found this helpful.

Check Engine light on, VTM4 on Honda Pilot 2003. Gives error codes P1399, P0450, P0301 - any thoughts? Owners manual says pull over immediately if VTM4 light on and shut engine off in Drive. Did this about 6 times on the way home just a few miles. Is that necessary?

Your Answer:

Pilot

Looking for a Used Pilot in your area?

CarGurus has 45,659 nationwide Pilot listings starting at $1,600.

ZIP:

Honda Pilot Experts

  • #1
    Fordtudor37
    Reputation
    640
  • #2
    jmtnh
    Reputation
    590
  • #3
    Patrick Jay R
    Reputation
    540
View All

Related Models For Sale

Used Toyota Highlander
407 Great Deals out of 52,004 listings starting at $2,500
Used Honda CR-V
637 Great Deals out of 78,955 listings starting at $2,195
Used Acura MDX
299 Great Deals out of 16,402 listings starting at $1,750
Used Toyota 4Runner
259 Great Deals out of 34,593 listings starting at $2,995
Used Honda Odyssey
466 Great Deals out of 37,329 listings starting at $1,480
Used Nissan Pathfinder
291 Great Deals out of 24,455 listings starting at $2,200
Used Ford Explorer
863 Great Deals out of 68,555 listings starting at $800
Used Honda Accord
585 Great Deals out of 104,730 listings starting at $1,225
Used GMC Acadia
453 Great Deals out of 33,190 listings starting at $3,500
Used Chevrolet Traverse
423 Great Deals out of 29,189 listings starting at $3,922
Used Toyota Sienna
258 Great Deals out of 23,222 listings starting at $2,490
Used Chevrolet Tahoe
554 Great Deals out of 38,496 listings starting at $1,243
Used Toyota RAV4
553 Great Deals out of 79,941 listings starting at $1,995
Used Jeep Grand Cherokee
984 Great Deals out of 77,320 listings starting at $900
Used Kia Sorento
425 Great Deals out of 31,782 listings starting at $2,250

Used Cars For Sale

2015 Honda Pilot EX-L w/ DVD 4WD For Sale
57 listings starting at $19,995
2014 Honda Pilot EX-L w/ DVD 4WD For Sale
19 listings starting at $16,984

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.