Air Conditioner Pressure Sensor
specification & Features
OE/OEM Part Number
EAT347
Manufacturer Part Number
1465A622/EAT347
Type
A/C Pressure Switch
Quality
High-Quality
Material
Metal+Plastic
Manufacturer Warranty
1 Year
Flow Rate
270cc/min @3.0 bar
Operating Pressure
2.5-6.0 bar (turbo-ready)
Coil Resistance
14.5Ω±0.3Ω
About Product
The Air Conditioning Pressure Sensor is an important safety part of the air conditioning and refrigeration system. It is made just for premium family automobiles like Mercedes-Benz, BMW, Audi, and Porsche. It fixes problems with signal distortion that happen under difficult settings, like start-stop interference in hybrid cars, coastal salt spray corrosion, and racetrack overpressure.
This air conditioning pressure switch works with NTG6 and iDrive 8, so you can easily replace the original part or add a carbon-reinforced high-pressure sensor to a high-performance vehicle. It makes sure that the air conditioning works well and that you drive safely.
Products Advantage
- Accuracy and Dependability
Our Air Conditioning Pressure Sensor (OEM 499000-8020) has a MEMS silicon-core sensing device that accurately tracks refrigerant cycles in both regular and electric automobiles. It has a full-scale accuracy of ±1.2% over a pressure range of 0 to 35 bar.
The dynamic self-calibration algorithm cuts calibration drift by 65% compared to analogue sensors by constantly making up for changes in temperature and the ageing of parts. This is important for keeping performance up in difficult environments (-40°C to 150°C).
Its smart dual-threshold protection promptly shuts down the system within 50 ms when it senses overpressure (30 bar) or leaks (1.5 bar). This protects the compressor from harm that could happen during high-load cooling or refrigerant loss.
- Adaptability and Compatibility
This sensor, which is made for international car platforms, easily combines with R134a and R1234yf refrigerants and automatically modifies pressure mapping to meet EU F-Gas standards.
It makes retrofitting for hybrid and electric vehicles easier and doesn't require software updates because it comes pre-programmed with multi-brand ECU protocols (Toyota, Mercedes, Ford, and VW).
Compared to conventional pressure switches, the universal GT-150 waterproof connectors (which can be customized to TE/Molex) and pre-installed mounting brackets allow plug-and-play installation, saving 40% of workshop labor time.
- Sturdiness and Effectiveness
The stainless steel housing is built to last in tough situations and passes 1,000-hour salt spray testing (ASTM B117), which stops corrosion failures in places with high humidity or near the sea.
The IP67 protection rating means that it is dustproof and temporarily waterproof, making it excellent for heavy-duty or marine use. Its 15G vibration-resistant structure keeps the signal stable in off-road trucks or maritime HVAC systems.
The ultra-low 8mA standby current fixes a common problem with 48V mild-hybrid systems: it keeps the batteries from running out in EVs and hybrids.
- Intelligent Maintenance & Diagnostics
Using common car interfaces, technicians can make detailed diagnostic reports by using built-in OBD-II self-test procedures. These reports can find problems such early compressor wear or refrigerant degradation.
Fleet operators may now do predictive maintenance by finding problems like slow leaks three to six months before big failures happen. This is possible because of the real-time may-BUS 2.0 output streams that send data to telematics systems.
Main application scenarios
Mercedes-Benz C-Class and E-Class Hybrid Models: Variations in Refrigerant Pressure Due to Regular Starts and Stops
Frequent starts and stops can cause Mercedes-Benz's 48V mild hybrid system's classic mechanical pressure switches to misread low refrigerant pressure (<2 bar), which can cause the compressor protection lockout. Our sensor keeps the R134a pressure signal going during engine restart, which keeps the air conditioning system from going down.
This is possible because of its high-speed 20 ms sample rate and ISO 26262 ASIL-B fault-tolerant algorithm. It can scan problem codes directly with MB Star Diagnostics and works with Mercedes-Benz NAN2/NTG6 auto systems.
Sensor Terminal Corrosion Problem in Coastal Cities: BMW 3 Series/5 Series (G20/G30) (Long Tail Keywords: BMW G-series Corrosion-Resistant AC Pressure Switch)
This sensor has PTFE seals and gold-plated CuNi18 terminals to protect the BMW G platform's lightweight aluminium tubing from salt spray damage while keeping the impedance below 0.5Ω (ISO 6722 standard).
This takes care of the "refrigerant pressure sensor signal loss" problem that people in coastal areas like Miami and Guangzhou often have. You don't need to programme this sensor; just plug it in and it works. It has the same component number as the original manufacturer (61315A37AB3).
Upgrade to R1234yf Refrigerant Compatibility for Audi A4/A6 (MLBevo Platform)
Since 2021, all Audi automobiles have been using R1234yf refrigerant. Using R134a, on the other hand, made the cooling systems of older A4/A6 cars (2016–2020) 23% less effective.
Our sensor, which features a dual-refrigerant adaptive chip that automatically detects R134a/R1234yf, increases compressor efficiency back to 98% on earlier MLBevo platform models by remapping the 0–25 bar pressure curve. This also supports code-free ODIS system updates.
Overpressure Protection in Performance Mode for the Porsche 911 and Panamera
When the Porsche Sport Chrono mode is activated, the air conditioning line pressure can quickly rise above 32 psi.
With an improved tungsten carbide diaphragm structure and 50,000 pressure shock tests, the sensor can still accurately turn on compressor shutdown protection within 50 milliseconds (with an accuracy of ±0.3 bar) during a PDK transmission launch. Works with PIWIS III, the first diagnostic tool made for Porsche.
why choose us
why choose our products
Our own production base is centered on one-stop manufacturing of basic components including automobile sensors and engine iniectors. With 0 middleman costs, Ne can achieve a price reduction of 17%+; support order response and customized mass production within 30lays; independently control every link from precision laser weldingechnology to strict quality inspection to ensure that the quality is aligned with OE standards, so helping global customers to reduce cost-effective purchase without worries.
Frequently Asked Questions
Q1: Can my 2021 Mercedes-Benz C300 (W206 platform) use this pressure sensor? How can compatibility be checked?
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A: Your model (Original Part Number A0048350417) is compatible. This can be verified by:
VIN Decoder Verification: To ensure automatic matching, go to our official website and input the VIN of your car.
Physical Compatibility: The connector adheres to the Mercedes-Benz G3.5 quick-connect specification, which has an M12x1.5 thread and an outer diameter of 12mm.
Q2: Do you need a specific programming tool, like Mercedes-Benz Star Diagnose, to install it?
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A: No programming is needed. The sensor features a built-in Plug & Play pre-coded chip that instantly connects to the ECU when it is plugged into the OBD interface (which works with the SAE J2534 protocol). You only need to make sure that the pressure line is tight (torque limit: 15 ± 0.5 Nm).
Q3: After installation, the dashboard shows "B1A75 - Air Conditioning Pressure Sensor Signal Irrational." What do I need to do?
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A: Possible Reasons and Fixes:
Step 1: Look for oxidation on the connector (it is best to use contact revitalizer SW-20).
Step 2: Use a multimeter to check the voltage. It should be 5V when the ignition is on and the output should change between 0.5 and 4.5V once the engine starts.
Step 3: If the voltage is not normal, call customer care to get a free replacement (you will need the QR code on the back of the sensor).
Q4: If a Porsche owner has set Track Mode, can the sensors handle the high pressure?
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A: You can get an upgrade for a specific Track Mode version (P/N: SW-POR-ACPS). Characteristics:
Maximum pressure tolerance is 45 bar (factory 35 bar).
Integrated aluminum heat sink for better heat dissipation (operating temperature range: -40°C to 150°C).
Quick Reset: The PIWIS III technology lets you reset fault codes with only one touch.
Q5: Will the sensor stop working in very cold places (like -30°C)?
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A: It employs adaptive technology that works at low temperatures:
Filling with silicone oil stops icing from happening inside (passes MIL-STD-810G freeze-thaw testing).
Algorithm for warm-up compensation: It starts working 20 seconds after a cold start, with an accuracy of ±0.2 bar.
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