P0888 Cadillac Transmission Relay Always Off
Possible causes
– Transmission Control Relay harness is open or shorted
– Transmission Control Relay circuit poor electrical connection
– Faulty Transmission Control Relay
– Faulty Transmission Solenoid/Pressure Switch Assembly
– Transmission Control Relay circuit poor electrical connection
– Faulty Transmission Control Relay
– Faulty Transmission Solenoid/Pressure Switch Assembly
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0888 Cadillac Description
The Transmission Control Module (TCM) has detected less than 3 volts at the Transmission Control Relay output circuit
Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado , Cadillac Escalade EXT , Cadillac ATS , Cadillac CTS , Cadillac CTS Sedan , Cadillac CTS Sport Sedan , Cadillac CTS-V , Cadillac CTS-V Sedan , Cadillac Catera , Cadillac DTS , Cadillac DeVille , Cadillac STS-V , Cadillac STS , Cadillac Seville , Cadillac XTS , Cadillac XLR , Cadillac XLR Platinum , Cadillac Escalade , Cadillac SRX