Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1995 BMW 840CiFACTORY OEM SERVICE PROCEDURE
Trouble Code Definition
FAULT CODE IDENTIFICATION
| Code | Probable Cause |
|---|---|
| 0 | Undetermined Fault |
| 1 | Fuel Pump Relay |
| 2 | Idle Actuator Closing Winding |
| 3 | Fuel Injector No. 1 |
| 4 | Fuel Injector No. 4 |
| 5 | Fuel Injector No. 6 |
| 6 | Fuel Injector Output Stage |
| 7 | Fuel Injector No. 7 |
| 8 | CHECK ENGINE Light |
| 12 | Oxygen Sensor No. 2 |
| 13 | Oxygen Sensor No. 1 |
| 15 | Ignition Circuit Monitoring |
| 16 | Crankshaft Pulse Generator |
| 17 | Camshaft Sensor |
| 18 | No Malfunction |
| 22 | Coil No. 7 |
| 23 | Coil No. 6 |
| 24 | Coil No. 4 |
| 25 | Coil No. 1 |
| 26 | Control Unit B+ Supply |
| 29 | Idle Actuator Winding Opening |
| 31 | Injector No. 5 |
| 32 | Injector No. 8 |
| 33 | Injector No. 3 |
| 35 | Injector No. 2 |
| 36 | Fuel Tank Ventilation |
| 37 | Oxygen Sensor Heater No. 2 |
| 38 | Oxygen Sensor Heater No. 1 |
| 41 | Mass Airflow Sensor |
| 42 | Road Speed Sensor |
| 46 | Output Stage |
| 48 | A/C Compressor Cut-Off |
| 49 | Coil No. 2 |
| 50 | Coil No. 3 |
| 51 | Coil No. 8 |
| 52 | Coil No. 5 |
| 54 | DME Control Unit Power Supply |
| 55 | Ignition Final Stage |
| 62 | Electronic Engine Power Control Signal |
| 63 | Torque Converter Lock-Up Clutch |
| 64 | Ignition Control Unit Engagement |
| 65 | A/C Compressor |
| 66 | Alarm System Signal |
| 67 | Knock Sensor Cylinder No. 4 |
| 68 | Knock Sensor Cylinder No. 3 |
| 70 | Knock Sensor Cylinder No. 2 |
| 73 | Knock Sensor Cylinder No. 1 |
| 76 | Idle CO Potentiometer |
| 77 | Air Intake Temperature Sensor |
| 78 | Engine Coolant Temperature Sensor |
| 82 | Engine Drag Torque Control (MSR) |
| 83 | Automatic Stability Control (ASC) |
| 85 | A/C Compressor Relay |
| 100 | Output Amplifier Stage (Group 1) |
| 101 | Output Amplifier Stage (Group 2) |
| 200 | DME Control Unit |
| 201 | Oxygen Sensor Control No. 1 |
| 202 | Fault Memory In Control Unit |
| 203 | Oxygen Sensor Control No. 2 |
| 204 | Idle Speed Increase |
| 205 | Transmission Intervention During Gearshift |
| 206 | Knock Regulation |
| 210 | CAN Interface |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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