P1774 Buick Low Coast Brake Solenoid Valve Function
Possible causes
– Faulty Low Coast Brake Solenoid Valve
– Low Coast Brake Solenoid Valve harness is open or shorted
– Low Coast Brake Solenoid Valve circuit poor electrical connection
– Low Coast Brake Solenoid Valve harness is open or shorted
– Low Coast Brake Solenoid Valve circuit poor electrical connection
Tech description
There is a service bulletin for a various Models with the RE5R05A transmission.
Factory Service Bulletin OBDII Code P1774 Buick
Factory Service Bulletin OBDII Code P1774 Buick
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1774 Buick Description
Low coast brake solenoid valve is turned