Fault code for AUC Sensor – A6CF
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| Originally Posted by jarad35,Do you know if the AUC sensor will prevent the AC compressor from engaging? I have the pressure sensor on the way, and just want my AC to work so if I need to get the AUC on the way I will. |
The AUC function is to detect pollutants in the ambient air when A/C is using outside air (as opposed to recirculating inside air). If it detects pollutants, it causes the recirculation flap to go to recirculate mode, but it does NOT shut down compressor function. A non-functioning Refrigerant Pressure Sensor WILL prevent compressor function however, so you will have everything you need to restore refrigeration circuit function when the new Pressure Sensor arrives (assuming you have a vacuum pump, refrigerant, etc. ;-). Note the 2nd post in this thread: George
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| Originally Posted by e90yyc I’ve replaced my sensor with one from a scrapyard and am still getting this code.disconnecting AUC sensor will also throw a A6CF code, so it seems the fault is quite general and does not refer to the function of the AUC sensor itself. |
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| Originally Posted by jarad35,I have two codes I think are related. The first is the same one you have re the AUC, the second is DRUCK_SENSOR (9C5E), which translates to pressure sensor. |
Just to clarify: Since BOTH the AUC and Refrigerant Pressure Sensors (along with the Compressor Control Valve are connected to the JBE which is in turn connected to the IHKA, I would presume that either code (A6CF or 9C5E) was found by connecting to the JBE as opposed to the IHKA, or else found using Functional Jobs (assuming you are using INPA) and shown as being saved in JBE error memory? Thanks, George
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| Originally Posted by BillyOnions I have the same fault, is this a relatively easy job to do,? |
Super easy. Literally disconnect the harness and twist the old one out. Installation is the reverse of removal. _ When I’m dead, just throw me in the trash.
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| Originally Posted by e90yyc Super easy. Literally disconnect the harness and twist the old one out. Installation is the reverse of removal. |
I know the original one you bought that was from the scrap yard was bad. Was the one you bought last brand new? What was the cost? Is the function of the climate control noticeable after the fix? Air quality?
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| Originally Posted by Salzamani I know the original one you bought that was from the scrap yard was bad. Was the one you bought last brand new? What was the cost? Is the function of the climate control noticeable after the fix? Air quality? |
Ended up getting ahold of another used one that worked fine. At least no codes, which leads to me to believe the readings were within spec and therefore it’s functioning well enough. Someone on this forum ended up sending me one, but frankly if I had to buy a used one I wouldn’t pay more than $20 Canadian, so like $15 USD max. And many here will say that’s way too much; my options are more limited up here though. New ones are about $75 USD, which I certainly had no intention of paying for something as nonessential as this. To your question about air quality: Honestly, I’ve noticed no difference. I’m just the type of person who likes to fix shit when it breaks, even if the real-world impact is minimal. Since all it does is automatically recirculate air if pollutant levels exceed a certain threshold, I’m not surprised I haven’t noticed. Truthfully, there are instances when I would have expected it to activate recirculation but it hasn’t—times where I’ll smell strong diesel fumes, but nothing seems to happen. I’m sure it works, I just don’t know at what thresholds it activates, and what pollutants the sensor responds to. _ When I’m dead, just throw me in the trash.
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| Originally Posted by e90yyc Ended up getting ahold of another used one that worked fine. At least no codes, which leads to me to believe the readings were within spec and therefore it’s functioning well enough. Someone on this forum ended up sending me one, but frankly if I had to buy a used one I wouldn’t pay more than $20 Canadian, so like $15 USD max. And many here will say that’s way too much; my options are more limited up here though. New ones are about $75 USD, which I certainly had no intention of paying for something as nonessential as this. To your question about air quality: Honestly, I’ve noticed no difference. I’m just the type of person who likes to fix shit when it breaks, even if the real-world impact is minimal. Since all it does is automatically recirculate air if pollutant levels exceed a certain threshold, I’m not surprised I haven’t noticed. Truthfully, there are instances when I would have expected it to activate recirculation but it hasn’t—times where I’ll smell strong diesel fumes, but nothing seems to happen. I’m sure it works, I just don’t know at what thresholds it activates, and what pollutants the sensor responds to. |
Good details man. Thank you!! I guess I’m wishful thinking here. I’m not sure I will ever buy a turbo car again. Heat is destructive to so many things. I can’t stand a anything that runs hot and turbos run hot. One problem that these BMW’s have is once the engine area gets fully warmed up from a drive the fresh air coming into the cabin is hot even though the outside air temperature is nice and cool. I never had this problem with any other car I’ve ever owned. Both of the BMW’s I’ve owned 535i & 335i both with the same turbo engines have this issue. I can override this heat in the cabin by turning on the AC which in my opinion only puts more of a load on the engine and makes it run even hotter. I don’t believe there is anything that is wrong with the engine it’s just a design flaw. I keep hoping to one day run into a fix but the truth is in all the forums I’ve ever looked with others reporting this issue no one ever reports a fix. Most people just say it’s normal and it’s just by design. Yeah I’m the same way in that I want my stuff to work right but I’ve learned if your not careful you can waist a lot of money on these cars and when you go to sell it that money will not go back in your pocket. I do most of the repairs myself. I bought the car 2 years ago. It’s an 07 335i E90. It only had 64k miles. I paid $9400 for it. I’ve learned a lot about these engines since I owned 2 of them. I’ve performed about $8000(what dealer would charge)worth of repairs and preventative maintenance. If I was to sell it tomorrow I would be lucky if I get $7500 for it. Damn car always need something man! I’m thinking about running back to Toyotas.
Fault code for AUC Sensor – A6CF
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Contents
What does AUC mean in BMW?
BMW (02-10) AUC Sensor Automatic Recirculated Air Control Share: Found a lower price? Let us know. Although we can’t match every price reported, we’ll use your feedback to ensure that our prices remain competitive.
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What is a sensor on a BMW?
Posted on January 23, 2021 by tannerwpuser – Your BMW’s oxygen sensor is a vital component of the vehicle. Its basic function is to determine the levels and ratio of gasoline and oxygen in your engine, It then tells your BMW to adjust these levels to optimize the vehicle’s performance.
If there is something wrong with your oxygen sensor, it isn’t an expensive component to have replaced or repaired. Don’t ignore it though, because if you put off fixing this problem and experience a sensor failure, it could lead to a more costly repair down the road, and a bigger problem with your vehicle as well.
Here’s a list of red flags that can indicate if your oxygen sensor is malfunctioning, If you see or feel any of these symptoms happening in your BMW, you should bring your vehicle to a mechanic to be looked at.
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What does AUC mean?
AUC: Area Under the ROC Curve – AUC stands for “Area under the ROC Curve.” That is, AUC measures the entire two-dimensional area underneath the entire ROC curve (think integral calculus) from (0,0) to (1,1). Figure 5. AUC (Area under the ROC Curve). AUC provides an aggregate measure of performance across all possible classification thresholds. One way of interpreting AUC is as the probability that the model ranks a random positive example more highly than a random negative example. Figure 6. Predictions ranked in ascending order of logistic regression score. AUC represents the probability that a random positive (green) example is positioned to the right of a random negative (red) example. AUC ranges in value from 0 to 1. A model whose predictions are 100% wrong has an AUC of 0.0; one whose predictions are 100% correct has an AUC of 1.0.
AUC is scale-invariant, It measures how well predictions are ranked, rather than their absolute values. AUC is classification-threshold-invariant, It measures the quality of the model’s predictions irrespective of what classification threshold is chosen.
However, both these reasons come with caveats, which may limit the usefulness of AUC in certain use cases:
Scale invariance is not always desirable. For example, sometimes we really do need well calibrated probability outputs, and AUC won’t tell us about that. Classification-threshold invariance is not always desirable. In cases where there are wide disparities in the cost of false negatives vs. false positives, it may be critical to minimize one type of classification error. For example, when doing email spam detection, you likely want to prioritize minimizing false positives (even if that results in a significant increase of false negatives). AUC isn’t a useful metric for this type of optimization.
Key Terms Except as otherwise noted, the content of this page is licensed under the, and code samples are licensed under the, For details, see the, Java is a registered trademark of Oracle and/or its affiliates. Last updated 2022-07-18 UTC. : Classification: ROC Curve and AUC | Machine Learning | Google Developers
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What does AUC mean in cars?
Comprehensive and reliable, the BMW Approved Used Car (AUC) programme is one of the best in the industry.
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How much does it cost to replace a BMW sensor?
The average cost for a BMW 328i backup warning system sensor replacement is between $1,488 and $1,514. Labor costs are estimated between $98 and $123 while parts are priced at $1,390. This range does not include taxes and fees, and does not factor in your specific model year or unique location.
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How much does it cost to fix sensors on a BMW?
Repair information for Bmw by Jerry, your personal insurance shopper OVERVIEW There are no parts required for this service, and services cost $106.20 – $129.80. This repair takes on average 0.90h – 1.10h for a mechanic to complete. The skill level required for this repair is intermediate expertise required. Urgency Rating This repair should be completed every 12000 miles If you need to replace your oxygen sensor, you’ll first have to diagnose the bad sensor with a scan tool, raise the vehicle, and then install the new oxygen sensor. This isn’t the easiest procedure to tackle at home, so it’s worth getting a professional to handle the replacement.
- Oxygen sensors send real-time data about your car’s air-to-fuel ratio so that your engine runs efficiently.
- If you notice decreased engine performance or you’re getting poor gas mileage, you may need to replace your oxygen sensor.
- If your oxygen sensor has failed, you’ll need to replace it as soon as possible.
broker and comparison app has the insight you need to get a replacement without breaking the bank. The exact cost varies between different Bmw models. For example, newer vehicle models are usually made with more expensive materials, so recent or high-end models will cost more, especially if your service requires a part replacement.
- Use the table below to estimate the cost for your own vehicle.
- Modern engines require oxygen sensors, also known as O2 sensors, to monitor the air-to-fuel ratio.
- Without a functioning oxygen sensor, an engine cannot run at peak performance.
- The oxygen sensor also monitors your car’s emissions.
- If the sensor has malfunctioned, your car won’t run smoothly, you’ll get worse mileage, and you’ll ultimately release more pollutants into the environment.
Depending on your vehicle, you may have up to four oxygen sensors—two per exhaust pipe, installed underneath the hood of your car. An average dealer will charge between $200 to $590 to perform this service because the cost of parts depends on your vehicle.
- A new oxygen sensor alone can cost you between $100 to $300 or more—and this doesn’t include labor.
- If you notice that your engine is misfiring, running roughly, or your check engine light is on, you might need to replace your oxygen sensor.
- Eventually, oxygen sensors will fail from normal use and it’s absolutely critical to replace them.
If you don’t replace a faulty oxygen sensor, not only will your engine run poorly, but you’ll also risk damaging your catalytic converter. When in doubt, if you smell sulfur or notice black smoke coming from your car’s exhaust, you’re due for a service.
Connect the OBD2 scan tool to your vehicle to determine if you need to replace the oxygen sensors at the top of your vehicle (upstream) or the bottom (downstream). Use jack stands to raise your vehicle to access the oxygen sensor.Disengage the oxygen sensor and remove it using an open end wrench.Before you install the new sensor, compare them to ensure it’s exactly the same.Lastly, reconnect the OBD2 scanner and clear the engine codes. This should turn off the check engine light.
Maintaining your vehicle can be hard work, especially if you’re doing the job yourself—but shopping for car insurance shouldn’t be. If you’d rather leave the hard work of gathering quotes to someone else, use, The Jerry app can collect quotes from more than 50 top insurance companies, like Travelers, Nationwide, and Progressive, in seconds! They even help cancel your old policy once you’ve made your pick.
- Eep in mind that your location is another factor that determines the final cost of repairs.
- Areas with higher cost of living will usually have more expensive car repair services, especially if there’s less local competition.
- Check out the table below for an estimate of what Bmw drivers pay in different cities.
Jerry doesn’t just offer fair price repair estimates for Bmw drivers! Our team of writers has collected everything you need to know for every car. Here’s how much the repair costs for some popular cars: The cost of repairs might vary depending on which Bmw you drive, but there’s an easy way to save money for the services you need! Just download the app for help lowering your insurance premiums.
In less than 45 seconds, Jerry collects all of your information from your existing insurer. Choose from competitive quotes from top insurance companies and Jerry takes care of the rest—securing your new policy and helping you cancel your old one upon request. With an average annual savings of $887, Jerry can help you free up funds for the repairs your Bmw’s needs.
The content contained in this article is for informational purposes only and should not be used in lieu of seeking professional advice. We encourage you to consult with a certified technician or mechanic if you have specific questions or concerns relating to any of the topics covered herein. Diagnostic Fee (Included in Service Charges) $36 – $44
Oxygen Sensor $80 Reset Indicator Lights $80 Windshield fogs up $80 Uneven tire wear $80
(609) 888-2007 Diagnostic Fee (Included in Service Charges) $0 – $0
Oxygen Sensor $95 License Plate Light $95 Throttle Adjustment Cable $95 Alternator Bracket $23.75
(801) 590-8311 Diagnostic Fee (Included in Service Charges) $135 – $165
Oxygen Sensor $125 Hissing noise when brake pedal is depressed $125 Window Switch is not working $125 Wipers do not shut off $125
Laurel Heights Automotive 9109 E Gregory Blvd #6407 Diagnostic Fee (Included in Service Charges) $45 – $55
Oxygen Sensor $113.21 Transmission fluid is leaking $113.21 Warning Light is on $113.21 Check Supercharger $113.21
(816) 353-9518 : Repair information for Bmw by Jerry, your personal insurance shopper
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Where are BMW sensors located?
These are located behind the windshield.
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Can you drive with a faulty sensor?
Can You Drive With A Bad Oxygen Sensor? – Yes, you can drive with a bad oxygen sensor if you can still start your engine and feel little difficulty driving. But don’t leave it alone for over a couple of days, as it might cause safety problems and lead to the malfunction of other parts of your vehicle.
- A bad oxygen sensor could cause sluggish and rough driving with stalls, along with poor fuel efficiency and high pollution.
- And if you leave it there for several months, it may lead to serious problems in the engine and catalytic converter which cost thousands of dollars to fix or replace.
- Thus, you need to get the oxygen sensor checked as soon as possible, like go to a mechanic during the weekend.
If you have a car diagnostic tool yourself, you can read the OBD2 code and search for possible causes online and try several simple fixes. Sometimes a trouble code indicating that the O2 sensor is malfunctioning could be cleared by cleaning the O2 sensor or replacing a pipe connected. 
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How do I know if my car has a sensor problem?
3. An Engine That Sounds Rough – If your vehicle has a bad oxygen sensor, it could run irregularly or sound rough when it idles. A faulty oxygen sensor can impact your engine’s timing, combustion intervals, and other essential functions. You could also notice stalling or slow acceleration.
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Why is AUC used?
Interpretation and usefulness of AUC values AUC is a useful metric when trying to determine whether two formulations of the same dose (for example a capsule and a tablet) result in equal amounts of tissue or plasma exposure. Another use is in the therapeutic drug monitoring of drugs with a narrow therapeutic index.
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What is a good AUC?
AUC can be computed using the trapezoidal rule. In general, an AUC of 0.5 suggests no discrimination (i.e., ability to diagnose patients with and without the disease or condition based on the test), 0.7 to 0.8 is considered acceptable, 0.8 to 0.9 is considered excellent, and more than 0.9 is considered outstanding.
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What is test AUC?
The area under (a ROC) curve is a measure of the accuracy of a quantitative diagnostic test. A point estimate of the AUC of the empirical ROC curve is the Mann-Whitney U estimator (DeLong et. al., 1988).
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What is an approved BMW?
Categories. Discover the benefits of purchasing an Approved Used BMW, These include:
12 month unlimited mileage BMW Warranty 12 month BMW Roadside Assistance 12 month MOT cover An independent, certified check to verify mileage and vehicle history Full vehicle preparation to pass stringent 360º inspection checks performed by qualified BMW Technicians. Any mechanical faults are rectified using only Genuine BMW Parts, most with a two-year Warranty for added peace of mind.
Find your perfect Approved Used BMW, click ‘Reserve and Buy’ and secure your dream car with a deposit and the BMW Centre will be in touch to sort out the rest. Search our range
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How is AUC calculated?
AUC using Concordance and Tied Percent –
Calculate the predicted probability in logistic regression (or any other binary classification model). It is not restricted to logistic regression. Divide the data into two datasets. One dataset contains observations having actual value of dependent variable with value 1 (i.e. event) and corresponding predicted probability values. And the other dataset contains observations having actual value of dependent variable 0 (non-event) against their predicted probability scores. Compare each predicted value in first dataset with each predicted value in second dataset. Total Number of pairs to compare = x * y x : Number of observations in first dataset (actual values of 1 in dependent variable) y : Number of observations in second dataset (actual values of 0 in dependent variable). In this step, we are performing cartesian product (cross join) of events and non-events, For example, you have 100 events and 1000 non-events. It would create 100k (100*1000) pairs for comparison. A pair is concordant if 1 (observation with the desired outcome i.e. event) has a higher predicted probability than 0 (observation without the outcome i.e. non-event). A pair is discordant if 0 (observation without the desired outcome i.e. non-event) has a higher predicted probability than 1 (observation with the outcome i.e. event). A pair is tied if 1 (observation with the desired outcome i.e. event) has same predicted probability than 0 (observation without the outcome i.e. non-event). The final percent values are calculated using the formula below – Percent Concordant = 100* Percent Discordant = 100* Percent Tied = 100* Area under curve (AUC) = (Percent Concordant + 0.5 * Percent Tied)/100
Interpretation of Concordant, Discordant and Tied Percent Percent Concordant : Percentage of pairs where the observation with the desired outcome (event) has a higher predicted probability than the observation without the outcome (non-event). Percent Discordant : Percentage of pairs where the observation with the desired outcome (event) has a lower predicted probability than the observation without the outcome (non-event). Percent Tied : Percentage of pairs where the observation with the desired outcome (event) has same predicted probability than the observation without the outcome (non-event). AUC : Area under curve (AUC) is also known as c-statistics. Some statisticians also call it AUROC which stands for area under the receiver operating characteristics. It is calculated by adding Concordance Percent and 0.5 times of Tied Percent. Gini coefficient or Somers’ D statistic is closely related to AUC. It is calculated by (2*AUC – 1). It can also be calculated by (Percent Concordant – Percent Discordant) In general, higher percentages of concordant pairs and lower percentages of discordant and tied pairs indicate a more desirable model. SAS and R Code for ROC, Concordant / Discordant : Download the CSV data file from UCLA website, The code below calculates these performance metrics in SAS and R. It executes each step explained above theoretically. SAS Code FILENAME PROBLY TEMP; PROC HTTP URL=”https://stats.idre.ucla.edu/stat/data/binary.csv” METHOD=”GET” OUT=PROBLY; RUN; OPTIONS VALIDVARNAME=ANY; PROC IMPORT FILE=PROBLY OUT=WORK.binary REPLACE DBMS=CSV; RUN; ods graphics on; Proc logistic data= WORK.binary descending plots(only)=roc; class rank / param=ref ; model admit = gre gpa rank; output out = estprob p= pred; run; /*split the data into two datasets- event and non-event*/ Data event nonevent; Set estprob; If admit = 1 then output event; else if admit = 0 then output nonevent; run; /*Cartesian product of event and non-event actual cases*/ Proc SQL noprint; create table pairs as select a.admit as admit1, b.admit as admit0, a.pred as pred1,b.pred as pred0 from event a cross join nonevent b; quit; /*Calculating concordant,discordant and tied percent*/ Data pairs; set pairs; concordant =0; discordant=0; tied=0; If pred1 > pred0 then concordant = 1; else If pred1 R Code # Read Data df = read.csv(“https://stats.idre.ucla.edu/stat/data/binary.csv”) # Factor Variables df$admit = as.factor(df$admit) df$rank = as.factor(df$rank) # Logistic Model df$rank
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What does OTA stand for in automotive?
Over-the-air (OTA) programming refers to the ability to download applications, services, and configurations over a mobile or cellular network. Over-the-air (OTA) programming is used to automatically update firmware, software, and even encryption keys. Specific OTA categories include:
Software over-the-air (SOTA) Firmware-over-the-air (FOTA) Over-the-air service provisioning (OTASP) Over-the-air provisioning (OTAP) Over-the-air parameter administration (OTAPA)
Here are some other subtopics we will cover in this article:
How do OTA updates work? How do connected cars get updates? Why would my car need a software OTA update? How to address over-the-air automotive security challenges? What company makes the security technology for OTA updates? Additional resources around OTA updates
What does EWS stand for BMW?
EWS – Electronic Immobilizer on CAN-based BMW motorcycles.
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What does BMW SD mean?
The sDrive and xDrive names pepper BMW’s model range, but what do these terms mean? We explain all If you’re looking to buy a BMW, you may well have come across cars advertised as being sDrive and xDrive, with no immediate explanation for what these terms mean.
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What is ACM BMW?
NEW Genuine BMW Parts – Accessory Control Module (ACM) Unit Level 1.
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