Emissions code 0030

Asked by BlesstheLord 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
220,965

Rowefast answered 7 years ago

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.

Mark helpful

Your Answer:

Related Questions

  • Emissions code 0030 1 Answer

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

    2001 BMW 7 Series 740iL RWD

    -

    Maintenance & Repair

  • 2003 BMW 745li has code A148 Control module faulthow do I fix this? 2 Answers

    2003 BMW 745li has code A148 reads Control module fault. How do I fix this? Which module do i need to replace? Please advice. Thank you!! JR

    2003 BMW 7 Series 745Li RWD

    -

    Maintenance & Repair

  • How do I remove the internal OBD cover on my 2001 740iL 1 Answer

    My abs, brake and traction lights are on and was told i can reset them with my code reader. The wood grain cover is off the port but I can not figure out how to get the internal cover off.

    2001 BMW 7 Series 740iL RWD

    -

    Maintenance & Repair

  • 2008 BMW 750I codes 3 Answers

    What does code U116D mean?

    2008 BMW 7 Series 750i RWD

    -

    Maintenance & Repair

  • BMW engine overheat message, no CEL error code 2 Answers

    This is regarding 2005 745LI, I have recently changed coolant Thermostat, Upper and Lower Coolant sensor and Radiator fan. I keep on getting Engine overheated at 107C. The Water pump is working fine...

    2005 BMW 7 Series 745Li RWD

    -

    Maintenance & Repair

Shortcuts

Search BMW 7 Series Questions

CarGurus Experts

  • #1
    lweems
    Reputation
    2,080
  • #2
    GuruCWCLH
    Reputation
    1,740
  • #3
    Vince Lee
    Reputation
    1,560
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Mercedes-Benz S-Class
18 Great Deals out of 204 listings starting at $6,500
Used BMW 5 Series
21 Great Deals out of 302 listings starting at $5,299
Used Mercedes-Benz E-Class
37 Great Deals out of 568 listings starting at $5,450
Used BMW X5
63 Great Deals out of 997 listings starting at $5,000
Used BMW 3 Series
68 Great Deals out of 1,212 listings starting at $2,500
Used BMW M5
37 listings starting at $25,990
Used Audi A8
40 listings starting at $18,499
Used Land Rover Range Rover
18 Great Deals out of 381 listings starting at $14,988
Used Lexus LS
30 listings starting at $5,995

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.