Tag
#alternator
2 posts in Car Diagnostics blog about "alternator" — OBD-II diagnostics, DTC codes, repair. ← All posts
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Battery and alternator via OBD-II: P0562, P0620, diagnose in 5 minutes
What OBD-II says about the battery and alternator: codes P0562 (low voltage), P0563 (high), P0620 (alternator). How to read system voltage and why "overcharge" is more dangerous than "undercharge".
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Car Battery Warning Lights: What the Dashboard Battery Symbol Means
Complete guide to car battery and charging system warning lights: what the red battery symbol means, the difference between red and amber indicators, and how to diagnose charging faults before they leave you stranded.