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 325is AutomaticFACTORY OEM SERVICE PROCEDURE
Trouble Code Definition
FAULT CODE IDENTIFICATION (M50)
| Codes | Affected Circuit |
|---|---|
| 0 | Undefined Defect |
| 1 | Fuel Pump Relay |
| 2 | Idle Speed Actuator (Close) |
| 3 | Injector No. 5 |
| 4 | Injector No. 6 |
| 5 | Injector No. 4 |
| 6 | Fuel Injectors (Output Signal) |
| 7 | VANOS |
| 8 | CHECK ENGINE Light |
| 12 | Oxygen Sensor No. 2 |
| 13 | Oxygen Sensor No. 1 |
| 15 | Ignition Circuit Monitoring |
| 16 | Crankshaft (Pulse) Sensor |
| 17 | Camshaft Sensor |
| 23 | Ign. Coil (Cyl. 4) |
| 24 | Ign. Coil (Cyl. 6) |
| 25 | Ign. Coil (Cyl. 5) |
| 26 | DME Power Supply (B+) |
| 29 | Idle Speed Actuator (Open) |
| 31 | Injector No. 5 |
| 32 | Injector No. 6 |
| 33 | Injector No. 5 |
| 36 | Fuel Tank Vent (Evaporation) Control |
| 37 | O2 Sensor Heater |
| 41 | Air Mass (Sensor) Meter |
| 42 | Vehicle Speed Sensor |
| 48 | A/C Compressor Shutoff |
| 50 | Ignition Coil (Cyl. 1) |
| 51 | Ignition Coil (Cyl. 2) |
| 52 | Ignition Coil (Cyl. 3) |
| 54 | DME Power Supply |
| 57 | Ign. Timing Intervention |
| 62 | Electronic Engine Power Control Signal |
| 66 | Theft Alarm Signal |
| 69 | Knock Sensor 2 |
| 70 | Knock Sensor 1 |
| 73 | Throttle Valve Potentiometer |
| 77 | Intake Air Temp. Sensor |
| 78 | Engine (Coolant) Temp. Sensor |
| 82 | Engine Drag Torque Control Intervention |
| 83 | Automatic Stability Control Intervention |
| 100 | Output Stage (Signal 1) |
| 101 | Output Stage (Signal 2) |
| 200 | DME Control Unit |
| 201 | Oxygen Sensor Control |
| 204 | Idle Speed Increase During MSR Operation |
| 206 | Knock Control Test Pulse |
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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