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.
Structure and inner electrical connection
The diesel particulate sensor consists of a measuring probe and evaluation electronics. The two parts are connected by a cable and cannot be separated.
The evaluation electronics is connected to a local CAN bus.
The front power distribution box supplies the diesel particulate sensor with terminal 15N.
| Item | Explanation |
|---|---|
| 1 | Measuring probe of diesel particulate sensor |
| 2 | Heating element |
| 3 | Evaluation electronics |
| Pin | Explanation |
|---|---|
| Terminal 15N | Terminal 15 after-run, supply voltage |
| Kl. 31 | Terminal 31, ground |
| Local-CAN | Local CAN bus |
NO RELATED
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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.