Pcm Code E048, EGR System Fault (1 Of 2): Action
PCM turns on SERVICE ENGINE SOON light for entire key cycle and EGR is disabled for entire key cycle.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- Checks for EGR operation using PCM override.
- Checking EGR gases entering intake manifold by raising EGR valve off of its seat.
- Checking EGR solenoid ability to pass vacuum.