Code database
Search OBD-II codes
Filter by family, system, severity, engine, fuel or manufacturer. Every row links to the full diagnostic page with causes, safety advice, checks and a guided workflow.
4 codes found with 1 filter applied
Showing 1–4 of 4
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System voltage unstable
The system voltage is fluctuating.
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System voltage low
System voltage is below the expected range while running.
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System voltage high
System voltage is above the expected range, risking battery damage.
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Generator field / alternator control circuit malfunction
The alternator excitation control circuit has a fault.
Codes are matched against published records; partial and keyword matches are shown after exact matches.
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