5 for over two seconds. 5 2015 Cooper D, can anyone help with the following codes regarding exhaust pressure sensor: 28EC00. Since there were no regens for quite a while since the thermostat failed quietly, I was at 60g of soot mass. Charge pressure sensor faulty. The Engine Control Module measures the amount of oxygen in the exhaust system via the oxygen sensors and makes adjustments by adding more or less fuel to the mixture. E72B No message (solar sensor, 0x3D3), receiver integrated automatic heating/air conditioning system, transmitter roof function center. bimmerfest. Replaced the corrugated hose that had a small slit in from the air intake. Took a run downtown and back on the highway and it went out by the time I got home. It can also be caused by an exhaust leak or a bad oxygen sensor. Diagnostic trouble code (DTC) P0133 stands for “Oxygen Sensor Circuit Slow Response (Bank 1, Sensor 2). 160010 - misfires, cylinders 6: recognized. With the heated circuit, the oxygen sensor requires. When accelerating, there is noticeably less power. SCHEDULE P2A00 DIAGNOSTIC. 6-speed transmission with drive shaft. Hi guys, I have a 2014 435iX F32 and I got a Drivetrain Malfunction for the code: 11A002 (Fuel Pressure Below Target) and 11AC02 (high-pressure fuel system, cold start: pressure too low) Mods: Aftermarket Chargepipe. BMW f30 520D fault codes 290900 28DE00 28EC00 FIXED. Diagnosis: It is important to complete the entire diagnostic process when diagnosing the P0700 code. In this video we take a look at fault code 2D5A VANOS Intake: Control Fault, Camshaft Stuck and how I set about rectifying it. On earlier models its extremly easy to change. Faulty gas cap. Exhaust gas recirculation cooler clogged. Check for any exhaust leaks before the catalytic converter. But the codes that were found were, in order: 1E0001: Idle speed control: Engine speed too high. Exhaust Pressure Sensor Pipe was totally blocked with carbon so removed it (thanks to a guide on here) and cleaned with carb cleaner: the car is a 2015 F20 bmw 118d. ” This code is logged when the powertrain control module (PCM) detects that catalyst efficiency is below the threshold on bank 1. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154. Check the coolant level. The pump works by pulling in filtered air and then pumps the air through the charcoal canister. DCT라는 약칭이 많이 쓰인다. The OSS sensor provides a signal to the PCM based on the speed of the output shaft of the transmission. 1. There's a bypass for the oil cooler that's part of that housing, and it doesn't allow oil to flow through the cooler until it reaches operating temp. Very rough idle--Code 28A0 Throttle valve opening angle-intake pipe absolute pressure, comparision pressure too high. DTC: 255B00,The exhaust gas return valve, position control: too much valve closed / positive change. As for your engine light coming on, then going off, yes, this will happen. After that followed the F10 BMW M5, the F06/F12/F13 BMW M6, the F80 BMW M3 and. The P0001 code is related to the electrical circuit combined with the fuel pressure regulator, which runs from the Engine Computer or ECM to the fuel pressure regulator at the fuel injection rail. P0041 is a diagnostic trouble code (DTC) for "O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2". As I can se it should be possible to change it from the top of the engine with some blood and tears. 6 N12 PSA EP6. They replaced the actuator motor, wiring harness, and seals accompanying those parts. Subaru & Honda. This is what has all ready been done. 118401: Mixture control: Mixture too lean, deviation too high. Diagnosis: It is important to complete the entire diagnostic process when. For the eligible vehicles, BMW of North America, LLC (“BMW NA”) is extending the limited warranty for the vehicle’s diesel particulate sensor to: 10 years/120,000 miles as determined by the vehicle’s original in-service date Note: This bulletin is notice of a “limited warranty extension. Enter a BMW fault code (P or hex), complete the Captcha, and click "Search". It means that the signal is above the pre-calibrated limit for a pre-calibrated time made by the manufacturers. You should also have a service plan in the fault list. ” It’s triggered when the PCM detects that the RPM of your input speed sensor and output speed sensor are different from what the PCM expects. I’m trying to figure out which sensor this is and if it’s covered under a 10 year. With so many moving parts, there are countless fault codes that tell you what needs attention on your BMW. Have you seen this TSB (SI B01 14 18) from BMW where the same DTC appears in the Ecu - as you experienced in your BMW. Fitted new chain, guide and tensioner using AST timing tool. When the TCM detects a malfunction with the control, a signal is sent to the Engine Control Module ( ECM) to trigger the Engine Light or Service Engine Soon light. GAS PRESSURE BEFORE TURBINE DYNAMICALLY NOT PLAUSIBLE. It depends how many short journeys you do compared to how hot the engine/exhaust can get to burn stuff off. iTrader: ( 0) F32 HPFP Code: 11A002 and 11AC02. Charvey30 said: I've got a 57 plate Mini Cooper 1. P1250 Isuzu Fuel Pump Relay Control Circuit Shorted To Ground. It's related to the egr system, but thats been replaced in 2019 and recently leak tested. 2. . Example: P1055. 1B8004: Environmental air catalyst sensor, engine coolant temperature sensor cooler output: Implausible with each other. 671:1 top gear ratio like the F80 M3 transmission and are usually priced between $2000-2500. Short in the TRS circuit. : the voltage of the Traction Battery in a HEV). The P0193 code indicates that the engine control unit gets a too high signal from the fuel rail pressure sensor. Refer to KSD2 for the corresponding flat rate unit (FRU) allowance. 20. I've started having the same issue. When running a code scan via BMWhat App, I captured codes 2A7A ("Outlet, cold start / VANOS Outlet") and 3100 ("Boost Pressure Control", i. Here are some of the most possible causes. I'm new here just got a 1. All the current CAN codes left, and the car functioned like it should. If it needs to be corrected more than that, the P0171 code will be stored. Example: P1055. Le débitmètre d’air massique est-il en cause ? La masse d’air est-elle trop élevée ou trop faible ? Ou bien la vanne EGR est-elle calaminée ? Vous apprendrez ici dans quels cas le témoin s’allume. i did a Carly health check as a i recently bought the car . BMW P 1381 Engine ECM Self Test - Bank 1 Knock Control Malfunction. 3. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Join Date: Feb 2020. After that you can go back into the module & run what ever sensor test you want. I installed them into my 428i, and getting TPMS light. It may go off for a week, leaving you feeling all is ok, but it will come again. On a 2016 Ford F-150 XL 5. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. The powertrain control module (PCM) is. . I recently moved from the 3-series to a 2013 X3 35i with 103K km on it. 4. 0: Tomorrow at 9 AM *Estimates may vary by market. Feature. P1250 KIA Pressure Regulator Control Solenoid Valve Open or Short. P0304 is a diagnostic trouble code (DTC) for "Cylinder 4 Misfire Detected". Of course my front tire was changed but i. P0135 is a generic powertrain code that applies to OBD-II-equipped vehicles. Step 4: Remove the. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. Location: Serbia. 3. If you have seen this code displayed on your on-board diagnosti. . P0505 Jeep Idle Control System Malfunction. If so the accelerator pedal and sensors are covered for 15 years/150000 miles. This DCT version features a . 1 Free Download; Newest BMW Rheingold ISTA-D 4. As a start i had reset all codes yesterday morning and by now, i got the below errors: CAS: D904/not present - CAS K-CAN line fault. BMW: $164. Vehicle Programming and Coding 7 posts · Joined 2022. Example: 180101 or 1B9308 or 30FF. Exemplary craftsmanship with great attention to detail. 99: $50. After searching the forums, I suspected a VANOS solenoid issue on either the Intake or Exhaust solenoids, or both. Bimmerforums is the preferred online BMW Forum and community for BMW owners. 2AF4/not present - DME Nitrogen-oxide sensor, electric. 2 and 1. I did reconnect vacuum to back of TB with (new gasket) and. : mode 22 as defined by SAE J2190 for Ford/GM, mode 21 for Toyota) for other information (e. Oxygen Sensor (O2) Code 1222. 67- CAN: Timeout KOMBI. Drives: M3. The computer is responsible for monitoring and controlling the purge valve. I think P0471 appears because of the P0472. The answer is Dynamic Traction Control. 6. The P0171 code indicates that the oxygen (O2) sensor on bank 1 sent a signal to the engine control module that the air-fuel mixture is too lean to be corrected. 3) is an early Bosch Motronic ECU, used on all of the 6 Cylinder BMWs up until 1990, and a few more after that. C0737 Camshaft timing is over-retarded. 2 – Fuel and air metering (injector circuit) 3 – Ignition systems or misfires. Appreciate 0 Quote 07-03-2023, 04:41 PM #10: Billfitz. rules. I have problems with my BMW F34 318d N47 engine. 32. Diagnostic trouble code (DTC) P20EE stands for “SCR NOx Catalyst Efficiency Below Threshold. Permanent DTC’s (Cleared DTC’s) Vehicle manufactures are not required to support all modes. 282E00 Lambda probe after catalyst triggering heating short circuit to positive. Its producing me 284e00 fault. Çok çeşitli sorunlar, bazıları diğerlerinden daha ciddi olan bir kontrol motoru ışığının yanmasına neden olur . As the engine oil heated up, the idle quality got noticeably better. 1 (and similar, 1. bimmerSeng Discussion starter. 1 and M1. 0: Tomorrow at 9 AM *Estimates may vary by market. What Does Code P0156 Mean? P0156 definition: Oxygen Sensor Circuit Malfunction (Bank 2, Sensor 2); Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Join Date: Jan 2015. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. I called BMW dealership and they said TPMS are same on both 328i and. Code 2BB300 “diesel particulate sensor measuring electrode faulty. P0700 definition: Transmission Control System Malfunction. Here they are talking about replacing the EGR valve with the following spare part number (PN 11 71 7 810 871) on the warranty. I have 2 codes stored in the computer: 1. bimmerfest. Code 25DB00 - Exhaust back pressure sensor upstream or diesel particulate filter, signal: Short circuit to B+DPF / Exhaust Pressure Sensor replacement (Part. Check setting of linkage with system test. 272F00 - EGR actuator high pressure, position control; mechanically defective near open. BMW P 1173 Atmospheric pressure sensor - adaptive learning. Checked code, it was 5e44 ECM, right rear speed sensor. 8L straight six engine that produced 168hp. Location: Cleveland. BMW 2800 CS (1968 to 1971) The BMW 2800 CS was the first variant of the BMW New Six Coupe (E9) to be introduced. Diagnostic trouble codes (DTCs) BMW code P-code Fault type and function Signal type and range Explanation 1 Ignition coil cyl. 99 . P0420 is a diagnostic trouble code (DTC) for "Catalyst System Efficiency Below Threshold (Bank 1)". ” This is NOT a notice of a RecallOverview of the 2A87 BMW Code. 12. If it is contaminated, the thermostat could stick. Name: B37 C15 A - DDE 7. Bmw F10 535 xDrive N57 Partikül Filtresi 18308511143 18308512692 dtc 28ec00. Run the service plan & follow the path of the test. 01 - 1. Removed the sensor to find corroded badness on the pickup. code 2A7C after Vanos replaced. 2006. EML came on today, scanner shows 8 codes, car still running/driving fine. Here are the simple steps to follow: Step 1: Odometer Reset. Few days ago i drove (with a speed 20 miles) to the holl on way on the right side front and back. This code means that the car’s computer detected trouble with the EVAP system vent valve’s function. 2E0F which is - valvetronic system : deactivated adjustment. Abs brake 4x4 lights come up after driving about 200 meteres and car starts jerking. System Type: ENGINE SYSTEM TEST/VALUES. 8/10 P0304. Fools rush in where angels fear to tread! I am responsible for what I write, not for your understanding of it. 290900. B. Right after an oil change, I got 2 warnings: Low oil pressure and drivetrain malfunction with engine power reduced. As suspected timing chain had jumped on exhaust cam. B18 02 17 December 2017B. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for. Each manufacturer may define additional modes above #9 (e. There’s 2 advantages to mapping out the software versus physically replacing the EGR valve: 1. Deleting the software is a permanent fix – remember that replacing the EGR valve with a new one does not guarantee it will not fail like its. Evaporative Emissions System Small Leak Detected. So many great cars used the old DCT. As suggested by the FIRST reply in the German Forum link you provided, there appear to be TWO (2) Eccentric Shaft Angle Sensors in what we casually refer to as the ESS. 160001 - misfires, cylinders 6: injection is switched off. When a turbo or supercharger is operating normally, the air going to the motor is pressurized. 0 3. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. iTrader: ( 1) 2BB300 Particulate Sensor Code. 개요 [편집] dual clutch transmission (DCT) 자동화 수동변속기 의 하위 개념. Code 1215. 99: $50. These usually range from $1500-2000. Exhaust backpressure codes after massive DPF regen. Join Date: Oct 2016. As a whole, it improves the vehicle’s handling, utilizing multiple sensors to. P0113 is a generic diagnostic trouble code that applies to all OBD-II-equipped vehicles. BMW P 1412 Exhaust air pump/solenoid - mechanical failure. The PCM detects that the actual MAF sensor frequency signal is not within a predetermined expected range of the calculated MAF value, and in this case it's determined that the air flow is too high. Le témoin de contrôle du moteur est allumé. I cleared down the codes and then ran Carly again a few days later and the same. Recently the EML has come on and after checking it with both ISTA and Bimmer Link diagnostics i get the following 2 codes: 24CF00 and 290B00 which are linked to air mass. Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. E723 No message (condensation sensor, 0x2D1), receiver integrated automatic heating/air conditioning system, transmitter roof function. La Haine wrote: ». I get this fault code. P2A00 is a diagnostic trouble code (DTC) for "O2 Sensor Circuit Range/Performance Bank 1 Sensor 1". Below are just some of the possible reasons why the P0004 code may register in your vehicle’s memory: Failed fuel volume regulator (FVR) solenoid; Wiring issues: FVR solenoid harness is open or shorted; FVR solenoid circuit poor electrical. 3. 5. Their test revealed DTCs 135A08 and 135808. Test drive the vehicle to ensure the vehicle is operating the correctly. DME: 2EF7/not present - DME Map thermostat activation. I was told the warranty is 7 years and that it expired in November 2019. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. 0L V8, for example, this DTC is described as, “OSS sensor signal input exceeds the calibrated threshold. C0B81 EGR Rate Control - Control Deviation. BMW Fault Code: P1014, P1017,P1023,P1030, P10DF, P10E0, P10E7, P10E8 This is a list of all the codes that showed up: P115D Mass or Volume Air Flow 'A' Too High. 62- CAN: ABS/ASC Signal. Come join the discussion about performance, modifications, troubleshooting, M series, motorsports, maintenance, and more! Fault code 290900 on a '14 N57 330D. Replace the mass air flow sensor. The DTC allows you to home in on the system that is not functioning properly. When the ECU detects a lower boost than what’s considered in the normal range, it will set the P0299 DTC. Here are some common repairs related to the P0339 trouble code. P1250 Jeep Vacuum Reservoir Solenoid Open Circuit. 5l. 5. Basically, that signal is "out-of-range," completely lacking, too high or low voltage, etc. 28DE00: EXHAUST GAS PRESSURE SENSOR BEFORE TURBINE, PLAUSIBILITY: EXHAUST. 30. 7 posts · Joined 2018. #2 · May 20, 2022. I have been dealing with issues on my car for a few months. Automotive OEMs and suppliers have agreed to rely on Unified Diagnostic Services (UDS) as a standard protocol to ensure International compatibility. The E90/E92 BMW M3 was the first M car to get the seven-speed dual-clutch auto. Damaged electrical connection. You can manually clear the faults on the last tab, highlight the clear fault, then hit the apply button at the bottom of the page. Dynamic Traction Control (DTC) When you press DTC button once and you get DTC light on means you have turned OFF the dynamic traction control but it will keep DSC running. 25932 posts · Joined 2015. WARRANTY INFORMATION Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. MCU (Computer) Malfunction. SpeedyStein said: On my car, they found oil leaking from the servomotor valvetronic sensor, and it had soiled the wiring harness as well. BMW $7,000 plus. P0505 Lexus Idle Air Control System 📷. Repair/replace faulty electrical connections. 0 hour of labor. Your OBD system detects faults in your car and displays a trouble code that tells you and your mechanic what needs service in order to get your vehicle back on the road. SCHEDULE P0022. Hi guys, I’ve a 2015 BMW 218d. Once you perform a complete diagnosis of the system, you should determine what needs to be fixed. 4 – Auxiliary emission controls. For example, if a DTC indicates a non-functional oxygen sensor heater, the simple explanation may be a blown fuse. Key features of the new BMW R 12 nineT and R 12. It is one of BMW’s in-built safety features working as a subset of the wider system – the DSC (Dynamic Stability Control). R 12 with 95 hp at 6,500 rpm and 81 lb-ft at 6,000 rpm. Yesterday when I started it up, it showed a CEL and there was some shaking during idle. The light is still appearing. 290900: AIR SYSTEM, AIR TO EGR MASS FLOW PLAUSIBILITY: MEASURED AIR MASS IN. 0. Table a. 7798. They are logged together since, in V8 and V6 (and. P0505 Lincoln Idle Control System Malfunction. 1. BMW DME M1. Fired up the wife’s X3d this morning and got a CEL. Facebook gives people the power to share and makes the world more open and connected. Hex Codes are typically given by more advanced scanners. So the story is: if you have the Over or Low Voltage on your BMW first to consider power regulator or the generator itself, for overvoltage, you most likely. Clavurion said: Before starting the engine this morning the atmospheric pressure is showing as 1007hPa compared to the exhaust pressure of 1017hPa. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. As professional mechanics, these are the steps we would take to diagnose the P0128 DTC. It shows that the O2 sensor signal is stuck in a lean condition. This BMW fault code lookup service was created by an enthusiast for enthusiasts. 3 was used on the M20, M30 and M40 engines, whilst M1. But I have a question about the module, I read some where that it maybe needs to get flashed. Code 1211. g. I used the AmsOil 5W30 Euro spec, so I thought it could be the oil, so next day. . 50] Yes, the oil temp sensor near the oil filter housing is the one that's faulty. M1. Once we are. This is a good opportunity to briefly describe what the DSC does and what its other parts are. Your car or truck has either a P0171, P0174 lean fault code or both stored in. P0073 is a diagnostic trouble code (DTC) for "Ambient Air Temperature Sensor Circuit High input". e. In a previous car I had a fault code on a lambda sensor generated from a lose wire so that could also be the problem. This vent valve is also known as the purge valve. BMW Fault Code Lookup. It makes noises like it wants to but nothing . I cleaned the MAF and made sure that was ok, it's fine, and I replaced the EGR. I had an engine check light come on and when scanned get the following codes. Can someone now where is it on the car. I have removed the MAF sensor and cleaned it, reset. they also rep. There are eight systems in total: 0 – Fuel and air metering and auxiliary emission controls. #1 · Aug 24, 2021. This diagnostic protocol is defined in ISO-14229 standard, This protocol is based on the Open System Interconnect (OSI) model, and it uses the fifth (Session layer) and seventh (Application. Learn More Fixes. The following codes were displayed after I read them: 140010 - misfires, more cylinders: recognized. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. (Or maybe used your own OBD scanner to extract the car faults). The warranty booklet that came with the manual lists either 7 yr 70k or 8 yr 80k depending on the model. This number denotes the particular vehicle system that has a fault. Availability. On inline-6 BMW engines, bank 1 refers to cylinders 1-3. If the catalytic converter is in good condition, this oxygen sensor takes more time to change its voltage. car is a 2004 330d m57n. #11 · Jun 21, 2018. Always connect a BMW approved battery charger/power supply(SI B04 23 10). 0 hour of labor. BMW MS40 MS40 was a new ECU for BMW, manufactured by Siemens instead of the previous Bosch Motronics. $0A. 15555 posts · Joined 2017. Don’t work on the vehicle while the motor is warm. View about #28ec00 on Facebook. A forum community dedicated to BMW owners and enthusiasts. P1250 Ford Fuel Pressure Regulator Control Solenoid Valve Circuit Malfunction. I know your BMW Model X4 is not covered in this TSB, but I think it's very close. 2022 BMW X3 [9. P0022 is a diagnostic trouble code (DTC) for "Camshaft Position A - Timing Over-Retarded (Bank 2)". EGR software delete for BMW and Mini diesel engines. C0862 Crankshaft Position Sensor A Circuit Malfunction. Drives: '15 328iX GT. INSTRUMENT PANEL (KOMBI) 60- CAN Bus, Bus Offline. Now you’re allowing wheel spin only if you’re driving forward but in case of any side slipping the car will not allow the spin to happen and that, of course, to prevent. 83] 2015 BMW M3 [6. So I'm still getting those code P0401 - air mass too high. 140001 - misfires, more cylinders: injection is switched off. It is the most comprehensive fault code database available online. . P0440: Evaporative Emission Control System Malfunction. Deleting the software is a lot cheaper, and; 2. Code P0720 may appear on some Ford vehicles. Made a ton of progress recently chasing DPF issues. BMW built the 2800 CS until 1971, when they replaced it with. ” Fuel trim is the adjustment made by the PCM to the engine’s air-fuel mixture. As for the ECM, here’s step-by-step guide on how to properly replace it: Step 1: Disconnect the battery from the car at least 15 minutes before installation. P0171 – System Too Lean (Bank 1) Code P0171 indicates the engines computer (commonly known as the DME) thinks the engine is running too lean on bank 1. It is common for most auto repair shops to charge between $75 and $150 per hour. Ive loaded Stock map with BM3 and car still runs very rough and lots of fuel. System Too Lean at Idle DTC. 3/10 P0456. 2, and M1. Bmw F10 535 xDrive N57 Partikül Filtresi 18308511143 18308512692 dtc 28ec00 Özellikle daha önce hiç görmediyseniz, kontrol panelinizde bir motor uyarısının görünmesi ne yazık ki büyük problemlere yol açar. com is not in any way affiliated with Bayerische Motoren Werke AG. 0d (190hp) fault codes. Hi Folks, Need some advice, i have a bmw 520d 2014 with the B47 engine. Replace air filter. 190F08: Fuel tank ventilation system: Malfunction. M3. Sent from my SM-G973F using Tapatalk Drives: BMW F30 320d 2013. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. 283400 Lambda probe after catalyst triggering heating stop. Top things to check while diagnosing BMW code 1020308 (Charge Air Pressure Plausibility Pressure Too Low) on N20 2. 026 14. Fuel pump had it replaced 2 times 1 buy independent and the second buy dealer. Hey guys I've been getting this fault code lately and I'm not sure how to fix it. In this video, we will be discussing the P0000 fault code and what it means for your vehicle. This "redundancy" is for reasons of plausibility check for safety purposes (we DON'T want our cars running away from/with us). . $01 - Live Data. P1250 GMC Early Fuel Evaporation Heater Circuit. To diagnose the U0284 code, it typically requires 1. Solution: While car was "acting up" I left the scanner connected and disconnected the tach/auxillary cluster. It helps reduce the NOx levels by routing inert exhaust gasses. Press the odometer’s Trip and Reset buttons while turning the ignition. Faulty Transmission range sensor. 12 Download Free + How to Install; Newest BMW E-sys 3. #1 · May 15, 2022. I drove around about 60 miles, tried reset about 5 times and always getting the same message "Tire Pressure Monitor Malfunction: System unable to detect pressure loss". P2783 Code - Torque Converter Temperature Too High. These have reappeared after each attempt to fix. The heater in the oxygen sensor helps get the sensor up to operating temperature faster in order to improve fuel economy and emissions. For the system to achieve a good pressure, the DME (BMW’s term for the ECM) pulses a vacuum controlled solenoid as the pump is operating.