Engine-Codes - Nissan - P1446 2003 NISSAN ALTIMA SEDAN

P1446 2003 NISSAN ALTIMA SEDAN - EVAP Canister Vent Control Valve Close

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1446 2003 NISSAN ALTIMA SEDAN Possible Causes

  • Faulty EVAP Pressure Sensor
  • EVAP Pressure Sensor harness is open or shorted
  • EVAP Pressure Sensor circuit poor electrical connection
  • Blocked rubber tube to EVAP canister vent control valve
  • EVAP Water separator
  • EVAP canister is saturated with water
  • Faulty EVAP canister vent control valve

How is the P1446 2003 NISSAN ALTIMA SEDAN code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P1446 2003 NISSAN ALTIMA SEDAN code

Labor: 1.0

The cost to diagnose the P1446 2003 NISSAN ALTIMA SEDAN code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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When is the code detected?

EVAP canister vent control valve remains closed under specified driving conditions.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1446 2003 NISSAN ALTIMA SEDAN Meaning

The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent.
This solenoid valve responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components.
This solenoid valve is used only for diagnosis, and usually, remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System (Small Leak) diagnosis.

More Information

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