Good morning,
Neither issue will cause the no start.
Can you hear the fuel pump turn on when you turn on the key?
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Can you check for spark to one of the plugs while cranking?
https://www.2carpros.com/articles/how-to-test-an-ignition-system
Lets check basics first.
The 401 is the DPFE sensor. Very common.
Roy
P0401
Descriptor
Egr Flow Insufficient Detected
Probable Causes
Differential Pressure Feedback (DPF) Exhaust Gas Recirculation (EGR) Sensor Downstream Hose Off or Plugged
Differential Pressure Feedback (DPF) Exhaust Gas Recirculation (EGR) Sensor Hoses Reversed
Differential Pressure Feedback EGR (DPFE) Sensor Hoses Both Off
EGR Vacuum Regulator (EGRVR) Circuit Shorted to Power
EGR Vacuum Regulator (EGRVR) Solenoid Damaged
EGR Vacuum Regulator (EGRVR) solenoid Circuit Open to Powertrain Control Module (PCM)
Exhaust Gas Recirculation (EGR) Flow Restricted
Exhaust Gas Recirculation (EGR) Orifice Tube Damaged
Exhaust Gas Recirculation (EGR) Valve Leak Vacuum
Exhaust Gas Recirculation (EGR) Valve Stuck Closed
Powertrain Control Module (PCM) Damaged
Reference Voltage from Powertrain Control Module (PCM) Open to Differential Pressure Feedback EGR (DPFE) Sensor
Vacuum Supply
Voltage Power Open to EGR Vacuum Regulator (EGRVR) Solenoid
141
P0141
Descriptor
Ho2S Sensor Circuit Malfunction (Ho2S-125)
Probable Causes
Ground Circuit Open
Harness or Heated Oxygen Sensor (HO2S) Short to Ignition Switched Power (VPWR)
Heated Oxygen Sensor (HO2S) Heater Damaged
Ignition Switched Power (VPWR) Circuit Open
Low Battery Voltage
Poor Mating Terminals and Wiring or Corrosion
Powertrain Control Module (PCM) Damaged
Water in Harness Connector
Image (Click to make bigger)
SPONSORED LINKS
Thursday, July 4th, 2019 AT 7:47 AM