P1408 Cadillac EGR Flow Out Of Self Test Range
Possible causes
For vacuum activated systems, see the possible causes for DTC P0401 Cadillac. For electric motor systems, see the possible causes for DTC P0400 Cadillac.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1408 Cadillac Description
This test is performed during the KOER on-demand self-test only. The EGR system is commanded on at a fixed engine speed. The test fails and the DTC is output when the measured EGR flow falls above or below the required calibration .
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