DTC P1491 Acura
EGR Valve Lift Sensor Insufficient Flow Detected
EGR Valve Lift Sensor Insufficient Flow Detected
Description
Vehicle driven in closed loop at 1700-2500 rpm for over 10 minutes, and the PCM detected the EGR valve lift sensor (EGRV) signal indicated insufficient EGR flow during the EGR Monitor test.
Cause and Solution
EGR valve lift sensor is stuck, damaged or has failed
EGR control solenoid circuit is open or shorted to ground
EGR control solenoid valve is damaged or has failed
Video Guide
Diagnostic Info
- DTC Code: P1491
- Brand: Acura