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

100

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???

10 Answers

72,375

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.

4 of 4 people found this helpful.
100

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

4 of 4 people found this helpful.
72,375

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).

4 of 4 people found this helpful.
100

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

3 of 3 people found this helpful.
72,375

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.

3 of 3 people found this helpful.
100

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

2 of 2 people found this helpful.
100

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

1 of 1 people found this helpful.
72,375

Up-stream...

1 of 1 people found this helpful.
100

2005 honda pilot check engine end vtm4 on

7 of 7 people found this helpful.
100

Am driving after one my,the vtm4 on

3 of 3 people found this helpful.

Your Answer

Add photo

Related Questions

Pilot

Looking for a Used Pilot in your area?

CarGurus has 23,213 nationwide Pilot listings starting at $995.

ZIP:

Search Honda Pilot Questions

Honda Pilot Experts

#1 Fordtudor37
Fordtudor37
Reputation 600
#2 Patrick Jay R
Patrick Jay R
Reputation 510
#3 becktrader
becktrader
Reputation 470
View All

Related Models For Sale

Used Toyota Highlander
396 Great Deals out of 25,469 listings starting at $2,495
Used Honda CR-V
945 Great Deals out of 56,152 listings starting at $1,000
Used Acura MDX
281 Great Deals out of 17,686 listings starting at $1,900
Used Toyota 4Runner
228 Great Deals out of 19,342 listings starting at $2,300
Used Honda Odyssey
233 Great Deals out of 19,812 listings starting at $1,495
Used Nissan Pathfinder
320 Great Deals out of 22,126 listings starting at $2,500
Used Ford Explorer
913 Great Deals out of 63,253 listings starting at $700
Used Honda Accord
1,055 Great Deals out of 66,822 listings starting at $1,000
Used GMC Acadia
595 Great Deals out of 44,744 listings starting at $3,500
Used Chevrolet Tahoe
600 Great Deals out of 33,203 listings starting at $1,375
Used Toyota RAV4
881 Great Deals out of 63,208 listings starting at $1,990
Used Jeep Grand Cherokee
1,037 Great Deals out of 72,282 listings starting at $1,200
Used Toyota Sienna
242 Great Deals out of 28,388 listings starting at $1,000
Used Kia Sorento
474 Great Deals out of 30,492 listings starting at $1,788
Used Chevrolet Traverse
670 Great Deals out of 39,584 listings starting at $4,615

Used Cars For Sale

2015 Honda Pilot EX-L w/ DVD 4WD For Sale
31 listings starting at $26,000
2014 Honda Pilot EX-L w/ DVD 4WD For Sale
61 listings starting at $22,250
2013 Honda Pilot EX-L w/ DVD 4WD For Sale
47 listings starting at $14,531

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.