According to ISTA, that Sensor, B6207a, sends a signal BOTH for Air Mass rate passing the sensor, as well as a signal for Intake Air Temp. Your first post shows reported Intake Air Temp of 18C, so it appears THAT signal of the Sensor and its connector is being received by the DME. An ISTA ScreenPrint of Air Supply SSP for N46 is attached. Unplug the MAF electrical connector. Visually inspect the electrical connector and terminal for dirt or damage. Gently pull on the wires to check for tightness. A dirty, burnt, contaminated, or loose wire will interfere with the sensor signals. Set your digital meter at or close to 20 Volts DC (direct current). What you really need to do is forget about the shop, they often blame problems on the MAF and the majority of the time the MAF is the last item that should be condemned. You need your own OBDII scan tool that support Freeze Frame and Live/Realtime data and Logging is also helpful.
One more thing that points me to the MAF is that I logged the air mass reading whilst driving. When I put my foot to the floor, the car would jolt like the car had a gearbox problem. Actually, the air mass reading spiked sharply downwards before climbing upward causing the jolt. The O2 sensor reading also went low at this time.
\n \n bmw e46 mass air flow sensor problems
The air valve is a one-way air flow valve. It mounts directly to the cylinder head, with a passage machined through the head to allow the air punp to inject air/oxygen directly into the exhaust manifold. This eliminates the external air injection manifold distribution pipes to the manifold. The whole system is monitored by o2 sensor.
Engine won't stay at idle and will die off once gas paddle was lifted off. As you can see the engine sounds different like suffocating of oxygen. Probably EC
Quick test to tell if Mass Air Flow Sensor is bad or dirty which could be causing your car or truck to run bad or keep cutting off.
In this short DIY video, we will show you two simple steps that you can do to determine whether you have a faulty mass air flow meter. These steps can be used on most bmw models especially
Proper exhaust backpressure measured at the top oxygen sensor port right after installing a new BMW exhaust manifold (catalyst): Idle - needle rattles at around 0 psig Light load stoplight cruising up to 2500 RPM - 0.5 - 1 psig My reading was 12.49 voltage. That's good because the MAF sensor is getting power, but the sensor was bad. 2) Second, I did checked the ground and the signal wire too. They both alarmed my multimeter. That's good news. 3) I did clean my MAF sensor with CRC Mass Air Flow Sensor Cleaner. Nothing was working and the performance got worst.

Analog mass air flow sensor is used in models produced to 09 I 2006. The sensor, incorporating an electrically heated film in the air flow stream, sends to the ECM a varying voltage (approx. 0.5-4.5 volts) representing the mass of the intake air. The ECM provides operating voltage and ground to the air flow sensor. As air flows through the

The mass air flow sensor, as its name suggests, senses the mass of incoming air. There are two main types of mass air flow sensors – the hot-wire and hot-film type. While they might sound quite different, they work quite similarly. Both sensors, in most cases, are located between the air filter box and the intake manifold of the engine.

HOW TO KNOW IF MAF SENSOR IS BAD. MASS AIR FLOW SENSOR TEST Scanner Used in the video:

Siemens 5 Pin Maf E46 Fanatics Forum. Bmw E46 Air Flow Online Lazada Com My. 6 Pin Maf Connector Question E46 Fanatics Forum. Help Me With My E39 Cer Bmw M5 Forum And M6 Forums. Mass Air Flow Meter Sensor Maf 0280218075 13621438687 For Bmw E46 N42 N45 N46 Sho Malaysia. Cruise Control Gear Indication Switch Bmw M5 Forum And M6 Forums just unscrew the rear clip pop out and clean through the rear through the plastic bulls eye grate. if you clean through the front..youre gonna have to spray through the metal mesh and plastic grill so do it from the rear side of the maf.. not really that hard to figure out. 1. Reply.
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The P010 code indicates that the engine control unit recognizes a faulty circuit towards the intake air temperature sensor. It can be either a faulty sensor itself, or a wiring problem on the way toward it. The trouble code refers to an electrical circuit problem and not an air temperature problem. The air intake temperature sensor is often

Figure 1 The intake air ducts connecting the mass air flow sensor to the throttle housing have the tendency to crack and break over time. When replacing your air filter, inspect the intake air ducts for dry rot, cracks, or broken sections (green arrow). If you find any signs of wear, replace the air duct.
How to clean a Mass Airflow Sensor. Mass Airflow Sensor cleaning can increase fuel economy, stop hesitation and stalling, and shut off your check engine ligh
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