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Question

What causes fuel cell stack "low voltage" faults?

Answer

Membrane degradation and hydrogen leakage.

Explain

Low voltage faults reduce power output. CHEPQ tools test membrane integrity and hydrogen leakage—replacing the membrane or sealing leaks resolves the issue.

Related Diagnostic Guide

To explore this topic in a broader system-level diagnostic context:

Related Guide: EV/Hybrid High-Voltage System 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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