My service engine soon light came on and its saying emissions increase on the dash,whut do dat mean?04 530i

Asked by Shugg Jul 08, 2015 at 10:22 PM about the 2004 BMW 5 Series 530i Sedan RWD

Question type: Maintenance & Repair

2 Answers
9,815

schalk answered 9 years ago

Thermostat can cause emissions light if it is stuck open (engine won't warm up fast enough) or if the heater coil is broken (ECU tests the heater coil circuit on start up). I had a heater coil fail, and you can measure the resistance of the heater coil to eliminate that as a possibility. Pull the connector off the thermostat and measure the resistance between the two contacts - normally measures around 16ohms, but if it measures 1 (open circuit) then it is gone. A broken wire in the harness leading to the thermostat will also cause the same fault but it is rare.

1 people found this helpful.
Mark helpful
9,815

schalk answered 9 years ago

CHECK (http://5series.net/forums/e60-discussion-2/increased-emissions- warning-light-139742/)

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Own this car?

Share your experience with others.

2004 BMW 5 Series

Write a car review

Review another car

Shortcuts

Search BMW 5 Series Questions

CarGurus Experts

  • #1
    Michael Branan
    Reputation
    1,400
  • #2
    Robert Charlson
    Reputation
    1,050
  • #3
    apbimmer98
    Reputation
    950
View All

Know more, shop wisely

Search

Related Models For Sale

Used BMW 3 Series
1,002 Great Deals out of 14,280 listings starting at $1,200
Used BMW M5
31 Great Deals out of 805 listings starting at $10,000
Used BMW 7 Series
198 Great Deals out of 3,784 listings starting at $3,450
Used BMW X5
872 Great Deals out of 16,047 listings starting at $1,800
Used Mercedes-Benz E-Class
670 Great Deals out of 10,897 listings starting at $2,500
Used BMW M3
78 Great Deals out of 1,503 listings starting at $9,888
Used Mercedes-Benz C-Class
947 Great Deals out of 20,838 listings starting at $2,499
Used BMW 6 Series
55 Great Deals out of 820 listings starting at $5,980
Used Mercedes-Benz S-Class
297 Great Deals out of 6,758 listings starting at $1,500
Used BMW X3
1,184 Great Deals out of 16,239 listings starting at $2,499
Used Audi A6
217 Great Deals out of 3,262 listings starting at $1,999

Used Cars For Sale

2020 BMW 5 Series 530i Sedan RWD For Sale
6 Great Deals out of 43 listings starting at $14,950

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. Content will be removed if CarGurus becomes aware that it violates our policies.