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June 29th 2025

P0621 / PONTIAC

Generator Lamp L Control Circuit Malfunction

Notes:

June 29th 2025

P0621 / GENERIC

Generator Lamp/L Terminal Circuit Malfunction

Notes:

June 29th 2025

P0621 / GENERIC

Generator Lamp "L" Control Circuit Malfunction

Notes:

June 29th 2025

P0621 / CHEVROLET

Generator Lamp L Control Circuit Malfunction

Notes:

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NOTE: Results from this database are the beginning of the diagnostic process, further investigation should be performed to confirm results before you begin repairs.