B1597: LF mirror vertical position feedback circuit low [GM/Chevrolet]

Definition: This code indicates a problem with the left front (LF) mirror’s vertical position feedback circuit. The circuit is reporting a lower than expected voltage, which may affect the mirror’s ability to adjust vertically.

B1597: LF mirror vertical position feedback circuit low [GM/Chevrolet]

Typical Severity: Moderate

Common Causes

B1597: LF mirror vertical position feedback circuit low [GM/Chevrolet]

Description: The LF mirror vertical position feedback circuit is reporting a low voltage condition.

Common Causes:

• Faulty LF mirror vertical position sensor
• Wiring or connector issues in the LF mirror vertical position feedback circuit
• Corrosion or poor connection at the sensor or wiring harness
• Electrical interference affecting the signal from the sensor

 

Common Misdiagnosis

OBD2 Code: B1597

Description: LF mirror vertical position feedback circuit low [GM/Chevrolet]

Common Misdiagnosis: Replacing the mirror assembly without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

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OBD2 Code: B1597

Description: LF mirror vertical position feedback circuit low [GM/Chevrolet]

Common Diagnostic Steps:

• Check for any blown fuses related to the mirror control circuit.
• Inspect the wiring harness and connectors for damage, corrosion, or loose connections.
• Test the mirror control switch for proper operation.
• Use a multimeter to check for continuity in the mirror’s vertical position feedback circuit.
• Examine the left front mirror motor for faults or failures.
• If equipped, use a scan tool to read live data from the mirror control module and verify signal integrity.
• Replace any faulty components as necessary and clear codes after repairs are completed.