P1290 Cadillac Cylinder Head Temperature Sensor Signal Less Than Self-Test Range

P1290 Cadillac Cylinder Head Temperature Sensor Signal Less Than Self-Test Range

Possible causes
  • Grounded circuit in CHT harness.
  • Damaged CHT sensor.
  • Improper harness connection.
  • Damaged PCM.
    • Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1290 Cadillac Description

    Indicates a CHT sensor circuit malfunction (shorted).

    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