Thosesensors are always upstream from the catalytic convertor. The code does not necessarily indicate a failed sensor. The temp is sensed here to keep from overheating the convertor. A failure in the engine control computer or injector drivers can cause this among other things.
AudiForums A3 Series. A3/S3/Sportback (8P Chassis) . Lukeyb Registered User Location West of Lothian. Jun 27, 2014 #4 One thing i noticed in the hvac measuring blocks is that the G89 sensor, the 'Temperature Sensor in Fresh Air intake duct' is reading a temperature of -50C, it is clearly not -50C right now.
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PartNumber: 04E919501B. Supersession (s) : 04E-919-501-B; 04L919501; 4E919501B. Fits A3 (2015 - 2016) Engine Coolant Temperature Sensor - Repair or Replace. If your engine coolant temperature sensor has failed, you may notice one of several symptoms: your temperature gauge doesn’t move, your engine overheats without warning, your radiator Ihave an Audi A3 2.0 TFSI Quattro 2004 with 111,000 miles on the clock - I have had it fully serviced this week and the MOT passed 2 months ago with no faults or advisories. This week I had both the thermostat and the coolant temperature sensor replaced. Prior to the thermostat being replaced the engine fans would come on straight Hithere I have a audi a3 8p 2.0tdi. I have had some overheating issues. Location Netherlands. Aug 23, 2020 #2 turns out it was a fault coolant temperature sensor. If you haven't sorted it, and you still have this issue, I would pop the sensor out, give it a clean and just make sure the o ring is still in good nick. ROD EV_ECM20TDI01104L906021FT_002.rod. VCID: 7CF701E2F7DF8EA295-8028. 4238 - Engine Coolant Temp Sensor on Radiator Outlet (G83) P2185 00 [039] - Signal too High. Not Confirmed - Tested Since Memory Clear. this by autocom. P218500: SENSOR CIRCUIT 2 engine coolant temperature. . 294 74 196 89 28 127 237 313 99

audi a3 temperature sensor location