P0703High SeverityTransmission

Torque Converter/Brake Switch B Circuit Malfunction

What This Means

The torque converter/brake switch b circuit malfunction has been detected. This input signal issue affects the transmission control system operation.

Common Symptoms

Shifting problems
Incorrect gear engagement
Limp mode
Check engine light on

Common Causes

Faulty switch
Wiring damage
Adjustment needed
Connector issue
TCM failure

Estimated Repair Cost

$150 – $800

Parts and labor (varies by vehicle and location)

Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.