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P0620

Overview

Code

P0620

Code Type

P

Code Class

P0

System

Engine

Severity Level

High

Emissions Related

false

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0620 indicates a malfunction in the alternator control circuit

Symptoms

Battery warning light; Dim lights

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Alternator control system

Possible Causes

Faulty alternator; Wiring issues

Diagnostic Steps

1 Inspect alternator control circuit 2 Test alternator functionality

Drive Safety Notes

Alternator failure can lead to battery drain

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