27ab00 bmw fault code. The deposited soot particulates are then burnt off.

Codes 290900 air mass too high, 28ec00 exhaust gas pressure upstream sensor, 2ab600 exhaust back pressure too high, 290b00 air mass to low, 28de00 exhaust back pressure sensor before turbo, 286f00 upstream o2 sensor, 284e00 downstream P1117. Also the drivetrain malfunction - drive moderately pops up when driving under acceleration and a Nov 7, 2021 · 4. Jun 2, 2021 · The long version: Today, the EML came on in my 2010 F11 530d manual, so I pulled out my Carly adapter. BMW The BMW P0340 code is a diagnostic trouble code that indicates a problem with the camshaft sensor inlet signal. Yup, swirl flaps. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Jun 5, 2022 · At 95k it would be interesting to see how much the intake ports of the head are gunked up it could be causing a restriction, i use to get a lot of lexus / toyota in with the 2. Hi there guys, i am struggling with the same problem. 2BB100. Come join the discussion about performance, modifications, troubleshooting, M series, motorsports, maintenance, and more! Show Less Mar 1, 2022 · The module is straight forward to do as it’s in the intake manifold, the glow plugs can be a nightmare as they tend to snap and need drilling out. The BMW P0128 code is a diagnostic trouble code (DTC) that indicates a low engine coolant temperature. The codes are: 8040A9: Start Stop hall effect sensor: incorrect operation (pressure oblique). Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Bringing the BMW community together. Check operation of swirl flaps and fault code memory entries. Switching Solenoid for Air Assisted Injection Valves Bank 1 Control Circuit Signal Low. Check air duct between air mass meter and compressor for tightness. Nov 11, 2022 · Exhaust Pressure sensor Hi, I have a BMW F10 5. com is generated by its users. Table a. 20d 2011 model. Yes, I did many WOT and felt pretty much losing power slightly) The code I am getting is 27AB, 27C4, 2B2D, CDC0, 2B21. Any idea ?? Cheers. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! La liste complète des codes défaut BMW (Page 1) / Logiciels et outils de diagnostic BMW / ForumBMW. Replaced it and almost all the codes disappeared except one: dde 4954 control unit internal. Possible causes are: • Deterioration of coolant quality (the mixture concentration falls below 50%). I have removed the MAF sensor and cleaned it, reset Apr 20, 2015 · Here is a list codes and meaning: Attached Images. I have a 2009 118D with 67k on the clock. com. View post on imgur. You didn't say which engine your F25 has, that might make a difference with finding the AUC sensor. Oct 27, 2022 · Check out me diagnose and fix this bmw with charge pressure fault! Follow my steps and see how I go about getting to the bottom of this issue Use Thinkcar eu Drives: F30 XDrive 335d. 3 Oxford Green II / Black Top / Beige-Black Interior Koni Sport Shocks, Sharked, Strong Strut, Oxford Green II hardtop Jun 25, 2016 · IF your 323i has the N52B25 Engine with MSV80 DME, that "2EF7" Fault Code is PROBABLY (depending upon your engine & DME) for "Open-circuit" in Themostat Heater Control Circuit, per BMW Fault Code Lookup Definition & Fault Information Link below: N52 | P0597 | 2EF7 | DME: Map thermostat, activation | MSV80. net: passionné(e)s de BMW, visitez le forum pour en découvrir davantage. any help would be greatly appreciated. . When switched off and on, they cleared and the car ran fine. When I bought the car from a local lot, the guy told me he replaced the wiper motor. Jan 4, 2021 · Fault code 244C00 and oil Jump to Latest 7K views 5 replies 3 participants last post by Max0101 Jan 4, 2021 Feb 24, 2018 · S. Hopefully this can provide some more insights! Jun 17, 2016 · Fault Code 282B00. - 298700 - charging pressure controller, actuation. Feb 8, 2017 · Help clearing these fault code for BMW F30 320D. Almost all mechanics agree that 20k km is really the maximum interval you should do. iTrader: ( 0) 244C00 Charging Pressure Too Low. Dec 11, 2016 · As well, I recently purchased a tune from Jim Colley (had a great experience buying the bearings and kit from him). 3K views 3 replies 3 participants last post by rasa golf Apr 10, 2023. They ran 5-6 wipes then stopped in the middle of the windshield. So the BMW code is noted as 27B0 Secondary Air System Flow Rate Bank 1 > No signal. Fault code: INFO 16004E SECU - DEM event KFC KL15 undervoltage (secu) Fault code: 800FB5 Exterior mirrors poti defective right Fault code: 800FB6 Defective exterior mirror heating or elektro. So far, I have changed the fuel filter which was really dirty, but it hasn't cleared. 7c so I don't think it's solely a DPF issue. Exhaust gas recirculation cooler clogged. Exhaust gas pressure sensor before turbine faulty (in conjunction with the fault codes 27B900 and/or 4C83 and/or 28DE00 and/or 4990). 7 KB, 29307 views) Appreciate 7. Hi everyone. 244C00 - Charge-air pressure control, control deviation: charge-air pressure too low/positive control deviation. I have had the rear sensor and the reluctor ring replaced less than a year ago so Mar 1, 2024 · The default BMW 30k KM oil interval is waiting for the car to break after warranty. Mar 14, 2019 · My car is 2003 BMW 318i with N42 engine and I know probably most people in the States will not be familiar with 4 cylinder engines . As I can se it should be possible to change it from the top of the engine with some blood and tears. 2 - Actuator, left rear compartment flap (P They are roughly ordered by importance, which tends to be by color (red, amber, yellow, orange, green, blue, gray), but there are over 80 of them so be patient! Serious trouble or fault indicators. 50. Park brake indicator -- click for more. 5. (also random, and feels light I lost power even the warning light disappeared. 50. Tested my actuator in DIS when car was cold works perfectly, tested once car was hot and had lost power and actuator arm does not move. 801248 - Auxiliary cooling function: Stopped due to restriction by low-voltage power management. “B” Camshaft Position – Timing Over-Advanced or System Performance. Nov 19, 2004 · BMW Fault Codes (DTCs) Below is a comprehensive listing of BMW DTCs and the corresponding SAE P-codes. Posts: 1670. In simple terms, the 2AAF code is a specific DTC that relates to fuel pressure problems within BMW vehicles. My cars fine when cold but after 10 mins or so of driving loses all power no boost, limp mode I assume. 4000 - DDE - fuel-temperature sensor, signal. Cause. A simple solution would be to change the yaw sensor but the weird thing is that the sensor gets the right readings and reacts to rotational acceleration. Lately after car been serviced, in the mornings on cold start the engine is shaking for couple of minutes. 801253 - Heating/air conditioning: Power reduced due to consumption reduction. I can clear the code stated above and before it comes back the EGR appears to be working but when it logs the fault the EGR goes to 0%. 4944 - DDE - presupply-pressure sensor, signal. It provides a comprehensive list of fault codes, detailed instructions for diagnosis and troubleshooting, and valuable insights into resolving issues in these high-performance vehicles, ultimately facilitating accurate and The BMW P0073 code refers to a fault in the ambient sensor circuit, indicating that the sensor is reading a high voltage signal. 290900 - Air system, Air to Egr mass flow, plausibility : measured air mass compared with calculated air mass too high. Jump to Latest. I get this fault code. Just the red engine light that comes on occasionally but isn’t showing all the time. This code is triggered when the engine control module (ECM) detects that the engine coolant temperature (ECT) sensor is reading a temperature that is lower than the expected range. 4BDB - DDE - fuel presupply-pressure control. Recently, my ABS lights flashes up on the dash and the ABS activates, intermittently and only for a second. You need to use INPA, DIS or ISTA/D rheingold to reset Lambada Fault codes 282E00 & 283400. Diesel (N47 - DDE 7. bimmerfest. Feels like cylinder is not running, engine is 3L diesel. the following fault code came up on diagnostics using the c110 scanner. #4 · Feb 21, 2022. jamesfawcett. Found some suggestion from other forum about the fault code 9C73. I believe that means sometimes the fault is there and sometimes it is not. But let’s Jul 15, 2020 · In the US, you can get P-codes read at most any Advance Auto or Autozone. However this happens 3-4 times on a 25 minute drive to and from work. I have a new to me 2008 328i. The light is still appearing. Check if the turbocharger compressor is broken or stiff (in connection with a charging pressure control deviation). Get the correct Definition/P-code and then use BMW Fault Code Lookup to check the Definition, and also click on the "View" Link for "Service Info" that suggests tests to determine if a wiring fault, such as short in KL15 Wakeup circuit, or actual IBS Fault. -BMW remote Keys made and cut same day -Key data fixed in EWS or CAS for non starters or when theft attempted. P111F. The car is pretty new and has been updated to the latest software (NOV 2020) May 29, 2018 · Yes you can test actuator in DIS, I have the same fault code 3f57. P Code Count; P1055: 8209: P0171 Aug 20, 2021 · Didn't notice anything wrong with the start-stop. 1. Look up BMW trouble codes to research likely repairs. F40Model Year: 2019 + Previous Generations 2012-2015 BMW 3-Series and 4-Series Forum. fan: Maybe water pump is going bad. 7850 posts · Joined 2014. rt7085. Russ59. Ambient Air Pressure Sensor Electrical. iTrader: ( 0) Quote: Originally Posted by sps. Aug 25, 2023 · Understanding the 2AAF BMW Code. Engine torque difference Bank 1 to 2 - malfunction. Aug 16, 2015 · 28CE00 Glow Control LIN Data Bus Missing. Like. Van Revamp Wiltshire. Codes point to specific sensors, solenoids or components causing problems. They either become detached from the individual rods in each intake, or the actuating arm gets disconnected through wear - There are kits available to delete them permanently. 6. Does anyone know what can cause this fault code (5e38), sometimes 5e3c also shows up. Oct 30, 2014 · I previously had a problem with the car going into reduced power / limp mode - this was solved by changing the coolant thermostat (code was present for stuck thermostat). 7. synchronization process for FlexRay failed. The engine does not overheat and the map thermostat operates properly. I am getting the below fault code. The fuse hasn't blown again and still just the one code when reading the errors. - 2BBB00 - charging pressure controller, mechanical fault near closed position. “A” Camshaft Position – Timing Over-Retarded. 4A54 - DDE - glow plug, cylinder 2 activation. pdf (274. I looked for this DC/DC converter everywhere in the car where it must be Aug 27, 2018 · Bmw f10 520d 2010 fault code 4200A3 & 421252. 01 - MT/AT) 249300 - Rail pressure monitoring at engine start: the low rail pressure at engine start. P111E. Joined: Mon Nov 30, 2009 3:49 pm. BW autorepairs Over 30 year repairing BMWs. The first warning light was about two months ago. P0011. P0012. By the way coolant temp showing as 90. 2 posts · Joined 2023. These codes help technicians and vehicle owners identify specific issues affecting the car’s performance or functionality. by Sebf10 » Sun Sep 03, 2023 11:39 am. Arnie65. Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem. Perhaps that's what your shop did, and was NOT "lucky". Top 10 Most Searched Fault Codes. Cheers, codes and summary below. BMW Ecu repairs. Browse through 15 models of BMW available on site now. This page contains the top 10 most searched BMW P and hex fault codes using this site. 0d (190hp) fault codes. Fault Impact. All happening after 27AB00 code is in and 27A800. Find out the most popular BMW fault codes along with what they mean. Connecting an OBD2 scanner tool and reading BMW transmission fault codes is your first step. #10 · Jun 6, 2023. Jun 24, 2021 · The Service Engine Soon lamp is illuminated. Brake trouble indicators -- click for more. BMW DDE codes. Find out what you can do next to solve the problem you are experiencing. R. Learn More Fixes. First occurrence was addressed at the BMW service - pressure sensor was faulty and was replaced in approved used car warranty. Apr 15, 2024 · A forum community dedicated to BMW owners and enthusiasts. Popular BMW 3 Series (incl. What are the symptoms of the BMW P0340 code? The symptoms of the BMW P0340 code may include engine misfires, rough idling, stalling, and a decrease in power and acceleration. Bank 1 Air/Fuel Ratio Imbalance. Sort by Oldest first. 009C72-IHKA: Rear compartment stratification, left. E90 2005 preface M47 320d, fault code 42F2, electric fan activation, my radiator fan is not switching on. When I plugged in my code reader I got the below codes 25CE00 - exceeded boost pressure sensuor range Jun 14, 2019 · A forum community dedicated to BMW owners and enthusiasts. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada P0106. 2 Input analog timing (100 mV) DME initiates secondary ignition for each cylinder then looks for feedback Feb 5, 2023 · BMW 3 Series Forum - Technical Talk on the BMW E46 General BMW Discussions BMW 3 Series Forum - Technical Talk on the BMW E21 BMW 5 Series - Tech Talk For All Gen Of 5 Series BMW 3 Series - Tech Talk For All Gen Of 3 Series P219A. I think P0471 appears because of the P0472. 1 post · Joined 2022. 279000-swirl flap actuator position, long term drift: position deviation too high (current/new condition) Feb 10, 2022 · The fault is entered if it is present for longer than the following period (debounce time): 2000 ms. #3 · May 2, 2017. I had the car about a week and turned on the wipers for the first time. Here are the BMW Fault Code Lookup Definitions for the two codes, with Fault Information Sheet Link for each. Senior Member. Decided to do a read out with bimmerlink and spotted the fault codes 27F100 and 244C00 Any thoughts or suggestions before returning to brand service? 3. The MAF sensor appears to be stained. Hi all got these two fault codes 4200A3 - MV HIS open circuit and 421252 engine interface (MSA function status/MSA engine stop-start request 2 0x30b, vehicle power train status 0x3f9) invalid signal. Preferably 15k or even down to 10k, the 30k KM interval BMW uses is just ridiculous. If the previous checks are OK, replace particulate sensor. Common codes include: P0700 – Transmission control system fault Feb 8, 2019 · 5DC0 Wheel speed sensor: supply, rear right. 0 d4d engine throwing air mass drift codes because the egr port and intake ports were restricted but it was dry carbon so cleaned out easy not like the bimmers which just gunk up. Aug 12, 2022 · BMW 520 2. ard. Join Date: Mar 2017. May 19, 2015 · 1 2. -BMW Ecu repairs. Car still cranks but doesn't start. Jun 2, 2021 · Hello everyone I have problems with my BMW F34 318d N47 engine. com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. . Apr 4, 2021 · I will give it a try. Apr 10, 2023 · Code 244C00 code 27B900. But I have a question about the module, I read some where that it maybe needs to get flashed Feb 22, 2022 · I scanned the vehicle with an Autel scan tool and it showed a falult code 2BB300. #1 · Apr 10, 2023. Check line and plug connections. The measuring probe is regularly regenerated by heating up. Need some advice, i have a bmw 520d 2014 with the B47 engine. Mike. “A” Camshaft Position – Timing Over-Advanced or System Performance. CD0487: ZGM. In Dis if you read the fault code,then Jun 2, 2021 · 290900 - Air system, Air to Egr mass flow, plausibility : measured air mass compared with calculated air mass too high. 4. The evaluation electronics of the diesel particulate sensor communicates with the engine control via a local CAN bus. What are the symptoms of a P0073 code in a BMW? The symptoms of a P0073 code in a BMW may include poor fuel economy, reduced engine performance, and an illuminated check engine light. Frequency is 18 while the healing counter is 40. Charge pressure sensor faulty. From what I've read the sensor being unplugged causes the intake valve to open to the widest tolerance, some have said this gives the vehicle more power but takes away form the fuel economy. May 2, 2017 · vanos issue: you may need to replace the VANOS solenoid. “B” Camshaft Position – Actuator Circuit. 1 post • Page 1 of 1. 2012-2015 BMW 3-Series and 4-Series Forum. Aug 14, 2013 · 2aab 325 fault code n52 solenoids vanos Jump to Latest 27K views 4 replies 2 participants last post by psychozz Aug 16, 2013 Oct 18, 2023 · Help! Fault code 5e38 rotation rate sensor. 4 to scan my E46. I have used BMW Scanner 1. Just in case intake and exhaust, both because it will fail soon which was my case. 3. BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > BIMMERPOST Universal Forums > General BMW News and Cars Discussion > BMW Fault Code Database Google Search Search Forums May 30, 2017 · A6C9 wiper fault code 2008 328i. Join Date: May 2013. Aug 5, 2013 · 2000 2. -Correction of Engine ECUs Cas and key fitted to your car (when a key set from a different car has been used). 009C73-IHKA: Rear compartment stratification, right. the car is an F10 bmw 530d . - Intermittent. T:- 07921131952. BMW Garage I reset the DPF and deleted the fault codes and will monitor the backpressure and soot mass for some time to BMW fault codes are alphanumeric codes generated by the vehicle’s onboard computer, also known as the Engine Control Module (ECM). It keeps coming back so I guess the glow plug module is broken and need to replace it. M3) fault codes along with an explanation of their meanings. Fault code 2EF4 (279B) — Map cooling thermostat mechanically stuck is stored in the DME. Apr 4, 2024 · This is the 2nd instance on F48 2018 Diesel 69k Mileage. The steering angle sensor works too as i look with an obd Jun 28, 2019 · Yes we have done many with the latest bmw software updates before it's just a case of figuring out how to turn it off in the software byte by bite BW chiptune Tuning BMWs since 1991 Dyno Dynamics rolling road. If wires and plug connections are OK: Replace fuel filter heating. Sep 28, 2022 · A forum community dedicated to BMW owners and enthusiasts. Jan 3, 2023 · Since N43 Engine was NOT used in US, our BMW Parts Suppliers do not even LIST that part. 0d Diesel Touring (F11) 2014 Fault Code 2ABB00. Aug 18, 2022 · bimmerfest. 2. However, an AUC sensor should have nothing to do with your acceleration problem. -crome left Fault code: 030015 Window driver-side: invalid characteristic, no standardization exists Fault code: 9307A8 DAYS passenger door / page (BFT Feb 17, 2023 · 2015 x3 f25 2. Jun 22, 2021 · The evaluation electronics forwards these signals to the Digital Diesel Electronics (DDE). Generic OBD code is PO491. Dec 2, 2021 · bimmerfest. E series cars you need k-dcan to usb lead. 800FCB - Headlight positioning module (TMS) left reporting fault. New and fully refurbished BMW/Alpina ,Ecus (DME,DDE)and Cas units. Following the calculated test plan meant a check of the wires/fuses first and sure enough, the 30A fuse in the ECU compartment was blown. P Codes. P0015. First suspect is that the connectors are reversed, meaning Bank 1 Pre-cat sensor is plugged into Bank 2 chassis connector, and vice-versa: N52 | P2096 | 2C31 | DME: Oxygen sensor control | MSV80. Dec 12, 2014 · well its been two years since your original issue, just wondering if you were able to fix the issue. So decided to do diagnostics and got this fault. Mar 19, 2022 · Brgds Allan ‘15 F36 435xd Gran Coupé Ex: E46 330d, E91 330dA May 15, 2021 · Johnnyroper. Aug 2, 2019 · Fault code 9C73 and 93FC. So you will need to "ask around" to parts houses in UK re availability, price & "Version Fault". Agree with above. I have checked for air leaks and haven’t found any, air filter isn’t blocked. P0014. com is not in any way affiliated with Bayerische Motoren Werke AG. Seems like you have an intermittent problem. 27484 posts · Joined 2009. #2 · May 19, 2015 (Edited) The codes indeed indicate adaptation issues: 27AA Oxygen sensor adaptation at limit position before catalytic converter, bank 1. 746 posts · Joined 2022. It has 130k miles. Customer: no. All glow plugs been replaced week ago. Arijan esati Discussion starter. Sometimes you can "get lucky" using Amazon, entering "BMW 11787587130" (BMW followed by 11-digit BMW part#). 1729 posts · Joined 2013. E:- vanrevampwiltshire@yahoo. - The following component is switched off: Fuel filter heating. VerticalScope Inc. Last week I accelerated up a skip road onto the motorway and the car went into limo mode, it's a 2011 640d. EML came on today, scanner shows 8 codes, car still running/driving fine. *Air Conditioning Codes. Jun 21, 2017 · Fault code help! Hi all Need a bit of help with a couple of codes I've got. I have P0472 (Exhaust Gas Pressure Sensor - low input) coming up on the DTC and after a while P0471 (Exhaust Pressure Sensor Range) appears as well. The world of diagnostic trouble codes can be overwhelming, but breaking down the 2AAF BMW code into its components reveals a wealth of information about your vehicle’s fuel system health. Now I identified in real oem two sensors. Anyone know what are those codes and how to fix it. I re-started, the light went away, and it is now happening again today. Trouble code (s) stored, intake leak, mechanical fault, electronic throttle system (ETS) P1118. Check if diesel particulate sensor is correctly installed. 27AB Oxygen sensor adaptation at limit position before catalytic converter, bank 2. Location: NJ. Service Plan. The deposited soot particulates are then burnt off. I connect the car with ISTA diagnostics, and find several Jul 20, 2023 · 800F8C - Turning light, left, faulty. Bimmerpost ☰ Model Selection. Aug 24, 2021 · BMW F10 - Fault Codes 24CF00 and 290B00 - Air Mass. 27AB00 fault code is related to what? My f10 n47 engine starts to have lack of power bad lpg, gearbox very slow. 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. Check whether EGR valve is sticking, closes tightly and for fault code memory entries. Diagnostic trouble codes (DTCs) BMW code P-code Fault type and function Signal type and range Explanation 1 Ignition coil cyl. Last year was replaced the egr valve, egr cooler, dpf was cleaned, lambda sensor changed, intake manifold flaps changed and cleaned. Jun 23, 2023 · I’m getting 20F207 - Digital Motor Electronics -Internal Heat Management: Over Voltage Detected) No obvious signs of anything when driving. It indicated Diesel Particulate Sensor Measuring Electrode: Faulty. check the water pump flow and replace it with thermostat. Very difficult to give an idea of cost as the Labour could increase dramatically if they snap. About 110K miles on the clock at the moment with a 5 speed steptronic auto tranny. The ECT sensor is responsible for monitoring the temperature Sep 10, 2023 · Step 1 – Scan for Transmission Fault Codes. I have a bmw f30 335xd, I spent a lot of money and still I can't find the error, the turbo opens very late 3mp if it happened to anyone, please tell me. Sep 3, 2023 · 27ab00. Swan-son1. P0013. Oct 28, 2018 · I have read so much about this code and it seems like a common problem that bmw doesn’t seem to have a solution or cause for. The ECU also flags 25E400, 2AB700 and 28EC00. Content on bimmerfest. Long story short, it want hurt the engine. Yes it is a download to laptop job, for F series cars you need icom or enet lead. Charge-air temperature sensor faulty (displays values that are too high, mostly without fault entry). Bmw has a bulletin out for this and basically people under warranty that got the cylinder head replaced would still get the 28a0 code. Car had a front impact crash and this was fixed but stil getting the below fault codes. It downloaded a large array of fault codes, but the most serious one seems to be the EGR - specifically: Fault code: 255B00 Exhaust gas recirculation actuator, position control: valve closed too far / positive deviation. I have done a function test with a Delhpi scanner, i changed the temp sensor on the head underneath intake manifold. Any one has instruction to access IHKA and replace no. However, I can't get rid of this last 27D0 fault. Location: Newcastle upon Tyne. Rest assured that they'll be able to help you. 8. Hit the stalk again, and the same thing To summarize, the BMW Fault Codes DTC guide is an essential tool for technicians and mechanics working on BMW vehicles. Charge system trouble indicator -- click for more. Hi, m8s! I have this BMW in my garage with the fault code 2ABB00 DC/DC converter (support during engine start) for support of electrical system, control activation: Open circuit in engine control module DME/DDE. Nov 27, 2023 · 27AB00: Internal DDE control unit (cyclical authentication): data record check not OK 254C00: Info - safety case: accelerator pedal and brake active simultaneously 245600: Particulate filter system: load regeneration has been activated Feb 25, 2020 · -New and fully refurbished BMW/Alpina ,Ecus (DME,DDE)and Cas units. If one of the following stated faults for the charging pressure controller is stored, this fault must first be rectified: - 24A100 - Charging pressure controller, position sensor or status line. qj kv gs mx dr xi hh nn cm zv