P1404

Description
EGR VALVE PINTLE STUCK OPEN

PCM monitors EGR valve pintle position input to ensure that
valve responds properly to commands from the PCM. When ignition is
turned on, PCM learns the EGR closed valve pintle position. PCM
compares the learned EGR closed valve pintle position to the actual
position when EGR valve is commanded closed. If actual EGR position
indicates that EGR valve is still open when PCM is commanding EGR
closed, DTC will set.

Symptoms
You likely won't notice any drivability problems.

Causes

• Pintle valve stuck open.

Solutions

• Check for poor terminal connections at EGR valve.
• Check for excessive deposits on EGR valve pintle or seat,
  causing EGR valve to stick.
• Check to make sure the solenoid is working.
• Replace EGR valve