Question
What causes automotive CAN bus " no sleep" mode?
Answer
Module wake-up requests and communication errors.
Explain
No sleep mode depletes the battery. CHEPQ tools identify modules sending wake-up requests and test CAN bus communication—resolving errors or disabling faulty modules prevents battery drain.
Related Diagnostic Guide
To explore this topic in a broader system-level diagnostic context:
Related Guide: CAN & LIN Vehicle Network Diagnostics
Recommended Diagnostic Solutions
To apply the diagnostic concepts discussed above in real-world scenarios, explore our full range of professional automotive diagnostic tools. These solutions are designed to support battery testing, system diagnostics, and data analysis for modern vehicles and workshop environments.
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