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June 29th 2025

P1657 / CHEVROLET

1-4 Upshift Solenoid Control Circuit

Notes:

June 29th 2025

P1657 / CADILLAC

1-4 Upshift Solenoid Control Circuit

Notes:

June 29th 2025

P1657 / BUICK

1-4 Upshift Solenoid Control Circuit

Notes:

June 29th 2025

P1657 / AUDI

A/C clutch relay circuit short to B+

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.