Sending Units & Sensors
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1997 BMW 850Ci, 1997 BMW 840Ci, 1996 BMW 850Ci, 1996 BMW 840Ci, and 1995 BMW 850Ci. However, it is still accessible from the selected car via links, so may be relevant.
SENDING UNITS & SENSORS
| Description (Component) | Location |
|---|---|
| Automatic Air Recirculation Sensor (B414) | Front LH side of engine compartment. See Figure & Figure . |
| Auxiliary Throttle Position Sensor (R6253) | Front of engine. See Figure . |
| Camshaft Position Sensor (Cylinder Identification) (B6204) | Front of engine. |
| Crankshaft Position/RPM Sensor (B6203) | Front of engine; on RH side of transmission (840Ci). See Figure . |
| Crankshaft Sensor I (B6213) | Rear RH side of engine compartment below. |
| Crankshaft Sensor II (B6223) | Rear LH side of engine compartment below. |
| CYL. 1-6 Air Flow Sensor (B6216) | LH side of engine compartment. See Figure . |
| CYL. 7-12 Air Flow Sensor (B6226) | RH side of engine compartment. See Figure . |
| CYL. 1-6 Air Temperature Sensor (B6215) | Rear of engine. |
| CYL. 7-12 Air Temperature Sensor (B6225) | Rear of engine. |
| CYL. 1-6 Crankshaft Position/RPM Sensor (B6212) | Front of engine compartment. |
| CYL. 7-12 Crankshaft Position/RPM Sensor (B6222) | Front of engine compartment. |
| CYL. 1-6 Cylinder Identification Sensor (B6211) | Front of engine left. |
| CYL. 7-12 Cylinder Identification Sensor (B6221) | Front of engine right. |
| CYL. 1-6 Heated Oxygen Sensor (B6210) | On catalytic converter. See Figure . |
| CYL. 1-4 Heated Oxygen Sensor (B6210w) | On catalytic converter. |
| CYL. 5-8 Heated Oxygen Sensor (B6220w) | On catalytic converter. |
| CYL. 7-12 Heated Oxygen Sensor (B6220) | On catalytic converter. See Figure . |
| CYL. 1-2 Knock Sensor (B6241) | LH cylinder head (840Ci). |
| CYL. 1-3 Knock Sensor (B6241w) | LH cylinder head (850Ci). |
| CYL. 3-4 Knock Sensor (B6242) | LH cylinder head (840Ci). |
| CYL. 4-6 Knock Sensor (B6242w) | LH cylinder head (850Ci). |
| CYL. 5-6 Knock Sensor (B6243) | LH cylinder head (840Ci). |
| CYL. 7-9 Knock Sensor (B6243w) | RH cylinder head (850Ci). |
| CYL. 7-8 Knock Sensor (B6244) | RH cylinder head (840Ci). |
| CYL. 10-12 Knock Sensor (B6244w) | RH cylinder head (850Ci). |
| Dual Temperature Sensor (Coolant Temperature) (B6256) | Front of engine. See Figure . |
| DSC Steering Wheel Angle Sensor (R26) | On steering column. |
| Electro-Hydraulic Converter (Servotronic) (B15) | Under LH front of car. See Figure . |
| Engine Coolant Temperature Sensor (B6232 & B6236) | On coolant inlet. |
| Engine Coolant Temp. Sensor (EML) (B6234) | On coolant inlet. |
| Evaporator Temperature Sensor (B14) | RH side of LH footwell. |
| Front Acceleration Sensor (B41z) | RH front of wheel well above. |
| Fuel Level Sensor I (B6z) | Under RH rear seat. See Figure . |
| Fuel Level Sensor II (B25) | Under LH rear seat. See Figure . |
| Gradiant Monitor (DWA) (B28) | In LH rear side of luggage compartment. See Figure . |
| Hall Effect Camshaft Sensor (B6209) | Top center of engine. |
| Hall Effect Camshaft Sensor I (B6219) | Top RH side of engine. |
| Headlight Widening Potentiometer (R13) | LH side of dash. |
| Heat Exchanger Temperature Sensor, LH (B11) | Below LH side of dash. |
| Heat Exchanger Temperature Sensor, RH (B12) | Center console right behind radio. |
| Hot Film Air Mass Meter (B6217) | Front of engine. |
| Hot Film Air Mass Meter I (B6217w) | Front of engine (850Ci). |
| Hot Film Air Mass Meter II (B6227w) | RH side of engine compartment. |
| Intake Air Temperature Sensor (B6205) | Front RH side of engine compartment. |
| Intake Air Temperature Sensor (B6215A) | Front of engine (840Ci). See Figure . |
| Left Front Brake Pad Sensor (B16) | Behind LH front wheel. See Figure . |
| Left Front Impact Sensor (S71) | LH side of engine compartment. |
| Left Front Speed Sensor (ABS) (B2) | Behind LH front wheel. |
| Left Rear Speed Sensor (ABS) (B4) | Behind LH rear wheel. See Figure . |
| LH Heat Exchanger Temperature Sensor (B11) | Below LH side of dash. See Figure . |
| Logitudinal Acceleration Sensor (B49) | In LH forward side of luggage compartment. See Figure . |
| Oil Level Sensor (B6230) | Under LH front of car. See Figure . |
| Oxygen Sensor I (In Front Of Catalytic Converter) (B62101) | On catalytic converter; under center of car (840Ci). See Figure . |
| Oxygen Sensor I (Behind Catalytic Converter) (B62102) | Under center of car. See Figure . |
| Oxygen Sensor II (In Front Of Catalytic Converter) (B62201) | Under center of car. See Figure . |
| Oxygen Sensor II (Behind Catalytic Converter) (B62202) | Under center of car. See Figure . |
| Outside Temperature Sensor (B13) | Behind center of cowl. |
| Pedal Position Sensor (R10) | Below LH side of dash. See Figure . |
| Pressure Sensor/Plunger (Y16) | LH side of engine compartment. |
| RH Heat Exchanger Temperature Sensor (B12) | Center console right behind radio. |
| Right Front Impact Sensor (S72) | RH side of engine compartment near winshield washer reservoir. |
| Right Front Speed Sensor (ABS) (B1) | Behind RH front wheel. |
| Right Rear Acceleration Sensor (B48) | In RH rear side of luggage compartment. See Figure . |
| Right Rear Brake Pad Sensor (B17) | Behind RH rear wheel. |
| Right Rear Speed Sensor (ABS) (B3) | Behind RH rear wheel. See Figure . |
| Seatback Potentiometer (R7) | In lower LH front seatback. |
| Seat Cushion Movement Potentiometer (R9) | Under LH front seat. |
| Seat Cushion Rear Height Potentiometer (R8) | LH front seat. |
| Seat Height Potentiometer (R6) | LH front seat. |
| Series Resistor (For Secondary Air Pump) (R14) | LH side of engine compartment. |
| Steering Angle Sensor (B40) | On steering column. |
| Steering Column Angle Adjust Potentiometer (R19z) | Bottom of steering column. |
| Steering Column Length Adjust Potentiometer (R18z) | Bottom of steering column. |
| Temperature Sensor (B21z) | In ventilation duct left. See Figure . |
| Thigh Support Potentiometer (R15) | Under LH front seat. |
| Throttle Position Sensor (R6252) | Front of engine. |
| Vehicle Speed Sensor (B10) | On differential. See Figure . |