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What is PWM on code P1860 (converter lockup solenoid?) If so, what is the fix?

Vehicle: 2004 Cadillac DTS

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HI there

This stands for pulse width modulation. This is all part of the torque converter solenoid. I would first check the transmission fluid level and make sure it's clean.

P1860 CADILLAC - TCC PWM Solenoid Circuit Electrical

Read more: https://www.autocodes.com/p1860_cadillac.html

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