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Nissan MIL On/DTC P1491 Set Denver CO

Frontier (D22) or Xterra (WD22) may exhibit one or both of the following symptoms: MIL "On" with DTC P1491 (Vacuum Cut Valve Bypass Valve - VC CUT/V BYPASS/V) stored in the ECM; and/or difficulty refueling the vehicle. The vehicle's fuel tank may need to be replaced.

B's Auto Inc
(303) 578-4920
1236 E Hampden Ave
Englewood, CO
S & A Transmission
(303) 481-6406
2755 W Hampden Ave
Sheridan, CO
Fraser's Mobile Garage
(720) 763-8444
1535 Garland ST Unit 2
Lakewood, CO
Arvada Auto Tech
(720) 763-8226
5395 Marshall St
Arvada, CO
DIA Auto Service
(720) 949-7883
7680 Pena Blvd
Denver, CO
Roos Only - Subaru's Only
(303) 225-9456
3395 S Federal Blvd
Denver, CO
Car Care Auto Service
(720) 884-9960
1575 Allison St
Denver, CO
B J's Auto Theft and Collision Repair
(720) 833-7257
7051 E 56th Ave
Commerce City, CO
Randy's Tire & Auto
(720) 249-5285
1059 W Littleton Blvd
Littleton, CO
Autotek Auto Repair
(720) 306-7751
7939 E Arapahoe Rd
Greenwood Village, CO
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Nissan MIL On/DTC P1491 Set


February 18, 2009

A 2001 Frontier (D22) or Xterra (WD22) may exhibit one or both of the following symptoms: MIL "On" with DTC P1491 (Vacuum Cut Valve Bypass Valve - VC CUT/V BYPASS/V) stored in the ECM; and/or difficulty refueling the vehicle. The vehicle's fuel tank may need to be replaced. Use the appropriate Service Procedure provided in this bulletin to diagnose and repair these incidents, if they should occur ....

A 2001 Frontier (D22) or Xterra (WD22) may exhibit one or both of the following symptoms:

  • MIL “On” with DTC P1491 (Vacuum Cut Valve Bypass Valve – VC CUT/V BYPASS/V) stored in the ECM; and/or
  • Difficulty refueling the vehicle.

The vehicle’s fuel tank may need to be replaced. Use the appropriate Service Procedure provided in this bulletin to diagnose and repair these incidents, if they should occur.

 

Service Procedure
Warning: Before performing any of the Service Procedures below, be certain there are no ignition sources (i.e., open flames, sparks, etc.) in or around the vehicle/work area. Make sure the appropriate rated fire extinguisher is available for immediate use.

MIL “On” With DTC P1491 Stored:

  1. Connect CONSULT-II.
  2. Turn the ignition key to “on” but do not start the engine.
  3. Select “ENGINE,” “DATA MONITOR,” “EVAP SYSTEM PRESSURE SENSOR.”
  4. The pressure sensor value should read between 3.32 and 3....

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