P1402 Subaru Code - Fuel Level Sensor Circuit Malfunction
Quick Answer
The P1402 Subaru code indicates a malfunction in the fuel level sensor circuit. Common causes include Faulty fuel level sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the fuel system. 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
- P1402 Subaru indicates Fuel Level Sensor Circuit Malfunction.
- Common causes
- Common causes include Faulty fuel level sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the fuel system.
- 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.
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Code P1402 Subaru Description
The P1402 Subaru code indicates a malfunction in the fuel level sensor circuit. The fuel level sensor is responsible for measuring the amount of fuel in the tank and sending this information to the vehicle's computer system. This data is crucial for accurately displaying the fuel level on the dashboard gauge and ensuring the engine runs smoothly. When this sensor circuit malfunctions, it can lead to inaccurate readings of the fuel level, potentially causing the vehicle to run out of fuel unexpectedly or experience other performance issues.
Common Causes of P1402 Subaru
- Faulty fuel level sensor
- Damaged wiring or connectors in the sensor circuit
- Corrosion or contamination in the fuel system
- Issues with the vehicle's computer system
Symptoms of P1402 Subaru
- Inaccurate fuel level readings on the dashboard gauge
- Fluctuating fuel level readings while driving
- Check engine light illuminated on the dashboard
- Engine stalling or rough idling
- Reduced fuel efficiency
How to Fix P1402 Subaru
- Diagnose the issue by using a diagnostic scanner to read the trouble code and identify the specific cause of the malfunction.
- Inspect the fuel level sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components as needed.
- Test the sensor circuit to ensure proper voltage and continuity. Repair or replace any damaged wiring or connectors.
- Clear the trouble code from the vehicle's computer system and reset the check engine light.
- Test drive the vehicle to verify that the issue has been resolved and that the fuel level readings are accurate.
Cost to Fix P1402 Subaru
The typical repair costs for a fuel level sensor circuit malfunction can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to contact local shops for a more accurate estimate based on your vehicle make and model.
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Frequently Asked Questions about P1402 Subaru Code
1. What does the OBDII code P1402 mean on a Subaru?
P1402 indicates a Fuel Level Sensor Circuit Malfunction, meaning the vehicle's computer has detected an issue with the fuel level sensor or its associated circuitry.
2. What are the symptoms of a P1402 code on a Subaru?
Common symptoms include erratic or inaccurate fuel gauge readings, a check engine light, and, in some cases, issues with fuel system-related performance.
3. What causes the P1402 code to appear on a Subaru?
Possible causes include a faulty fuel level sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning ECM.
4. Can a bad fuel pump trigger the P1402 code?
While the fuel pump itself is not typically the direct cause, issues with the fuel pump assembly, which houses the fuel level sensor, could contribute to the code.
5. How can I diagnose a P1402 code on my Subaru?
Start by checking the wiring and connectors for damage or corrosion. Use a multimeter to test the fuel level sensor's resistance and verify the circuit's continuity.
6. Is it safe to drive with a P1402 code on my Subaru?
Yes, it’s generally safe to drive, but you may experience inaccurate fuel gauge readings, which can lead to running out of fuel unexpectedly.
7. How do I fix the P1402 code on a Subaru?
Repairs may involve replacing the fuel level sensor, repairing damaged wiring, or cleaning corroded connectors in the circuit.
8. How much does it cost to repair a P1402 code on a Subaru?
The cost depends on the specific issue, but replacing a fuel level sensor typically costs $200–$400, including parts and labor.
9. Can a P1402 code cause poor fuel economy?
While the code itself doesn’t directly impact fuel economy, misjudging fuel levels due to a faulty sensor can lead to inefficient driving habits.
10. Will clearing the P1402 code fix the problem?
Clearing the code will turn off the check engine light temporarily, but if the underlying issue isn’t resolved, the code will likely return.
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