P1446 Subaru Code - Fuel Tank Sensor Control Valve Circuit Low
Quick Answer
P1446 Subaru indicates Fuel Tank Sensor Control Valve Circuit Low. Common causes include Faulty Fuel Tank Sensor Control Valve, Fuel Tank Sensor Control Valve harness is open or shorted, Fuel Tank Sensor Control Valve 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 Subaru indicates Fuel Tank Sensor Control Valve Circuit Low.
- Common causes
- Common causes include Faulty Fuel Tank Sensor Control Valve, Fuel Tank Sensor Control Valve harness is open or shorted, Fuel Tank Sensor Control Valve 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 Subaru Description
What are the Possible Causes of the DTC P1446 Subaru?
- Faulty Fuel Tank Sensor Control Valve
- Fuel Tank Sensor Control Valve harness is open or shorted
- Fuel Tank Sensor Control Valve circuit poor electrical connection
How to Fix the DTC P1446 Subaru?
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 Subaru 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 Subaru Code
1. What does the OBDII code P1446 mean on a Subaru?
P1446 indicates an issue with the Fuel Tank Sensor Control Valve Circuit, specifically that the circuit is running at a lower voltage than expected.
2. What are the common symptoms of P1446 in a Subaru?
Symptoms may include an illuminated check engine light, difficulty refueling, poor fuel efficiency, or a noticeable fuel vapor smell.
3. What causes the P1446 code to appear?
The code can be triggered by a faulty fuel tank sensor control valve, damaged wiring or connectors in the circuit, or issues with the vehicle’s EVAP system.
4. Can I drive my Subaru with a P1446 code?
While the vehicle may still be drivable, driving with this code can lead to increased emissions and potential fuel system damage if not addressed promptly.
5. How do I diagnose the P1446 code on my Subaru?
Start by inspecting the wiring and connectors related to the fuel tank sensor control valve for damage or corrosion. You may also need a multimeter to check for proper voltage in the circuit.
6. How is the P1446 code fixed?
Repairs may involve replacing the faulty fuel tank sensor control valve, repairing damaged wiring, or cleaning corroded connectors in the circuit.
7. Can a loose gas cap cause the P1446 code?
A loose gas cap is unlikely to cause P1446, but it can trigger other EVAP-related codes. Always check the gas cap first as part of your troubleshooting.
8. Is the P1446 code related to the EVAP system?
Yes, P1446 is associated with the EVAP system, which controls fuel vapor emissions to reduce air pollution.
9. How much does it cost to fix the P1446 code on a Subaru?
Repair costs can vary but typically range from $100 to $300 depending on whether the issue is with the valve, wiring, or connectors.
10. Can a P1446 code trigger other OBDII codes?
Yes, issues with the fuel tank sensor control valve can sometimes lead to additional EVAP-related codes, such as P0441 or P0456.
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