Possible causes
– Faulty Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid
– Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid harness is open or shorted
– Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid circuit poor electrical connection
– Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid harness is open or shorted
– Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid circuit poor electrical connection
When is the obd code mean?
When the PCM detects a continuous open, short to ground or short to power in the TCC PWM solenoid valve circuit, then DTC P1860 sets. DTC P1860 is a type B DTC.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1860 CHEVROLET OBD Code Description