P1446 2002 Nissan Altima Sedan Code - EVAP Canister Vent Control Valve Close
Quick Answer
The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent. Common causes include Faulty EVAP Pressure Sensor, EVAP Pressure Sensor harness is open or shorted, EVAP Pressure Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1446 2002 Nissan Altima Sedan indicates EVAP Canister Vent Control Valve Close.
- Common causes
- Common causes include Faulty EVAP Pressure Sensor, EVAP Pressure Sensor harness is open or shorted, EVAP Pressure Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1446 2002 Nissan Altima Sedan Description
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.
What are the Possible Causes of the DTC P1446 2002 Nissan Altima Sedan?
- 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 to Fix the DTC P1446 2002 Nissan Altima Sedan?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1446 2002 Nissan Altima Sedan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1446 2002 Nissan Altima Sedan Code
1. What does the OBDII code P1446 on a 2002 Nissan Altima Sedan indicate?
- The code P1446 indicates a problem with the EVAP Canister Vent Control Valve Close function.
2. What are the common symptoms of a P1446 code in a 2002 Nissan Altima Sedan?
- Common symptoms may include difficulty starting the vehicle, reduced fuel efficiency, and the illumination of the check engine light.
3. What are some possible causes of the P1446 code in a 2002 Nissan Altima Sedan?
- The code can be triggered by a faulty EVAP canister vent control valve, a clogged vent control valve, or a leak in the EVAP system.
4. How can I diagnose the P1446 code in my 2002 Nissan Altima Sedan?
- Diagnosing the P1446 code typically involves using an OBDII scanner to retrieve the code, inspecting the EVAP system components for damage or leaks, and testing the vent control valve.
5. Can I continue driving my 2002 Nissan Altima Sedan with a P1446 code?
- It is not recommended to continue driving with a P1446 code as it can lead to worsening fuel efficiency and potential damage to the vehicle's emissions system.
6. How can I repair the P1446 code in my 2002 Nissan Altima Sedan?
- Repairing the P1446 code may involve replacing the EVAP canister vent control valve, clearing the code with an OBDII scanner, and checking for any leaks in the EVAP system.
7. Are there any DIY tips for fixing the P1446 code on a 2002 Nissan Altima Sedan?
- While some basic diagnostic steps can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for proper diagnosis and repair of the P1446 code.
8. How much does it typically cost to repair a P1446 code on a 2002 Nissan Altima Sedan?
- The cost of repairing a P1446 code can vary depending on the severity of the issue, but it may range from $100 to $300 for parts and labor.
9. Can a P1446 code in a 2002 Nissan Altima Sedan affect vehicle performance?
- Yes, a P1446 code can impact the vehicle's performance by causing drivability issues and reducing fuel efficiency.
10. How often does the P1446 code occur in 2002 Nissan Altima Sedans?
- The P1446 code is a relatively common issue in 2002 Nissan Altima Sedans, especially as the vehicle ages and the EVAP system components wear out.
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