DTC P0403 Cadillac
EGR Solenoid Control Circuit Malfunction
EGR Solenoid Control Circuit Malfunction
Description
Engine started; engine speed over 600 rpm, ECT sensor more than 180ºF, and the PCM detected the commanded state of the EGR solenoid driver did not match the Actual state of the EGR solenoid driver for 25.5 seconds during the CCM test.
Cause and Solution
EGR solenoid control circuit open, shorted to ground or power
EGR solenoid B+ circuit is open (test Actuator fuse in U H box)
EGR solenoid is damaged or has failed
Video Guide
Diagnostic Info
- DTC Code: P0403
- Brand: Cadillac