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P0A3B Powertrain

Generator A Over Temperature

Generator A reports temperature above the safe operating threshold.

Affected components

  • Generator a
  • Generator temp sensor

Common causes

  • High likelihood: Generator cooling failure
  • Medium likelihood: Sustained high generator load

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • Reduced-power or limp mode may occur

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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