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Home DTC Codes U0525 Medium · 30-60min
U0525 Warning

OBD2 code U0525: Bus termination fault

Faulty CAN termination resistor.

ECU: ECM

Detected Root Component

Network Component

Confidence level: low

Observed Symptoms

  • Loss of communication between modules
  • Dashboard errors

Possible Causes

  • Missing CAN termination resistor
  • Damaged CAN wiring
  • Corroded connector
Diagnostic Progress 0 %
Difficulty Medium
Est. time 30-60min
Tools Required 5 tool(s)

Tools Required

multimeter OBD scanner wiring diagram flashlight oscilloscope (optional)

Interactive Diagnostic

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Diagnostic Result

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Parts likely to be the cause (Moteur (général))

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Moteur (général)

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Frequently asked questions about code U0525

What does code U0525 mean?

OBD2 code U0525: Bus termination fault. Faulty CAN termination resistor.

What are the symptoms of code U0525?

Code U0525 may cause: Loss of communication between modules, Dashboard errors. The intensity of these symptoms varies depending on the vehicle and driving conditions.

What causes code U0525?

The most common causes of code U0525 are: Missing CAN termination resistor, Damaged CAN wiring, Corroded connector. A proper OBD2 diagnostic will pinpoint the exact cause.

Is it serious to drive with code U0525?

Code U0525 has moderate severity (Warning). Short-term driving remains possible, but a prompt check is recommended to prevent worsening.

How do I fix code U0525?

Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Missing CAN termination resistor, Damaged CAN wiring, Corroded connector. Difficulty: Medium · Estimated time: 30-60min.