The CAN bus wiring runs throughout the car. If there is a corroded connector (often behind the dashboard or near the fuse box) or a wire that has been pinched or rubbed raw against the chassis, the signal is interrupted. This is common if you have recently had work done on the dashboard or radio.
If you have cleaned the wires and changed the relay but the code still comes back, the issue might be inside the main computer board. At that point, it is best to take your car to a professional mechanic. They have special tools to test the deep electrical paths safely. If you want to try fixing this yourself, let me know: a9b7 peugeot
Moisture or debris in the engine bay connectors can cause pin corrosion, leading to signal loss or shorts. BSI Software/Hardware Glitch: Occasionally, internal logic failures in the BSI require a system reset or re-programming. 4. Recommended Action Plan Step 1: Visual Inspection: The CAN bus wiring runs throughout the car