Emissions code 0030

Asked by Mar 08, 2017 at 01:28 PM about the 2001 BMW 7 Series 740iL RWD

Question type: Maintenance & Repair

What does that code mean, my car didn't pass
emissions ?

1 Answer

75,485

P0030 BMW - HO2S 11 Heater Control Circuit...Possible causes; Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection, Faulty Engine Control Module (ECM)...The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem.

Your Answer

BMW 7 Series Experts

  • #1
    lweems
    Reputation
    1,760
  • #2
    Tom Demyan
    Reputation
    600
  • #3
    Vince Lee
    Reputation
    580
View All

Related Models For Sale

Used Mercedes-Benz S-Class
149 Great Deals out of 7,659 listings starting at $2,000
Used BMW 5 Series
515 Great Deals out of 15,901 listings starting at $1,500
Used Audi A8
71 Great Deals out of 1,940 listings starting at $3,995
Used Chevrolet Corvette
196 Great Deals out of 18,735 listings starting at $3,850
Used BMW 3 Series
1,093 Great Deals out of 33,855 listings starting at $1,000
Used Mercedes-Benz E-Class
670 Great Deals out of 22,137 listings starting at $1,500
Used BMW M3
23 Great Deals out of 2,114 listings starting at $6,599
Used Cadillac Escalade
240 Great Deals out of 12,153 listings starting at $2,000
Used BMW X5
356 Great Deals out of 15,128 listings starting at $2,995

Used Cars For Sale

2018 BMW 7 Series For Sale
1,539 listings starting at $75,999
2017 BMW 7 Series For Sale
15 Great Deals out of 243 listings starting at $51,900
2016 BMW 7 Series For Sale
3 Great Deals out of 191 listings starting at $45,995
2015 BMW 7 Series For Sale
14 Great Deals out of 452 listings starting at $21,900
2014 BMW 7 Series For Sale
18 Great Deals out of 565 listings starting at $23,999

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.