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eric
eric, Automotive Repair Shop Manager
Category: Nissan
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Experience:  Automotive Repair Shop Manager, Technician/JA Mentor
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What is code p1400 on a 96 nissan maxima

Resolved Question:

What is code p1400 on a 96 nissan maxima?
Submitted: 4 years ago.
Category: Nissan
Expert:  eric replied 4 years ago.

Hi,

 

P1400 NISSAN - EGRC-solenoid valve

P1400 NISSAN Description

The EGRC-solenoid valve responds to signals from the ECM. When the ECM sends an ON (ground) signal, the coil in the solenoid valve is energized. The vacuum signal (from the intake manifold collector) passes through the solenoid valve. The signal then reaches the EGR valve.
When the ECM sends an OFF signal, a plunger will then move to cut the vacuum signal.

 

When is the code detected? Malfunction is detected when the improper voltage signal is sent to ECM through EGRC-solenoid valve.

 

Possible Causes - Harness or connectors
- The EGRC-solenoid valve circuit is open or shorted
- EGRC-solenoid valve

 

 

Check vacuum hoses and connector at the EGR solenoid valve. If ok, test the solenoid:

 

EGR Control Solenoid Valve

See Figures 5 and 6



Click image to see an enlarged view

Fig. Fig. 5: EGRC control solenoid valve

  1. Label and disconnect the solenoid valve electrical harness and vacuum lines.
  2. Apply battery voltage as shown in the illustration (12v DC) to the solenoid terminals.




Click image to see an enlarged view

Fig. Fig. 6: Checking the EGR control solenoid valve by applying voltage. Be sure to apply voltage as shown

  1. Air should pass through Ports A and B freely.
  2. Disconnect the power supply from the solenoid.
  3. Air should not pass through Ports A and B freely.
  4. If the valve does not respond as specified, it may be faulty.
  5. If the valve responds as specified, check and repair the power and ground circuits.

 

EGR Control Solenoid Valve

The EGR and canister control solenoid valve is located on the intake manifold.

  1. Label and disconnect the solenoid valve vacuum lines.
  2. Loosen the solenoid valve attaching nut, then separate the valve from the intake manifold.


To install:

  1. Install the solenoid valve and tighten the mounting nut to 12-14 ft. lbs. (16-19 Nm).
  2. Connect the solenoid valve vacuum lines
eric, Automotive Repair Shop Manager
Category: Nissan
Satisfied Customers: 25112
Experience: Automotive Repair Shop Manager, Technician/JA Mentor
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