P1925 Mercury Code - Fuel Additive Level Circuit High
Quick Answer
The P1925 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the Fuel Additive Level Circuit being too high. Common causes include Faulty Fuel Additive Level Sensor: A malfunctioning fuel additive level sensor can send incorrect signals to the ECM, triggering the P1925 code, Wiring Issues: Damaged or corroded wiring connecting the fuel additive level sensor to the ECM can cause high voltage readings, ECM Malfunction: A problem with the engine control module itself can also lead to erroneous readings from the fuel additive level sensor. 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
- P1925 Mercury indicates Fuel Additive Level Circuit High.
- Common causes
- Common causes include Faulty Fuel Additive Level Sensor: A malfunctioning fuel additive level sensor can send incorrect signals to the ECM, triggering the P1925 code, Wiring Issues: Damaged or corroded wiring connecting the fuel additive level sensor to the ECM can cause high voltage readings, ECM Malfunction: A problem with the engine control module itself can also lead to erroneous readings from the fuel additive level sensor.
- 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 P1925 Mercury Description
The P1925 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the Fuel Additive Level Circuit being too high. This code typically appears when the engine control module (ECM) detects a high voltage signal from the fuel additive tank level sensor. The fuel additive tank is a component in the vehicle's emissions control system, used to store and dispense additives that help reduce harmful emissions.
Common Causes of P1925 Mercury
- Faulty Fuel Additive Level Sensor: A malfunctioning fuel additive level sensor can send incorrect signals to the ECM, triggering the P1925 code.
- Wiring Issues: Damaged or corroded wiring connecting the fuel additive level sensor to the ECM can cause high voltage readings.
- ECM Malfunction: A problem with the engine control module itself can also lead to erroneous readings from the fuel additive level sensor.
- Additive Tank Contamination: Contaminants in the fuel additive tank can affect the sensor's ability to accurately measure the level of additives.
Symptoms of P1925 Mercury
- Check Engine Light: The most common symptom associated with the P1925 code is the illumination of the check engine light on the vehicle's dashboard.
- Poor Fuel Efficiency: A high fuel additive level reading can cause the vehicle to consume more fuel than usual, leading to decreased fuel efficiency.
- Engine Misfires: The vehicle may experience engine misfires or rough idling due to the incorrect fuel additive level readings.
- Failed Emissions Test: If the issue is not addressed, it can lead to the vehicle failing emissions testing due to excessive emissions.
How to Fix P1925 Mercury
- Diagnostic Scan: Begin by using an OBD-II scanner to retrieve the trouble code and identify the specific issue causing the high fuel additive level reading.
- Inspect Sensor and Wiring: Check the fuel additive level sensor and its wiring for any signs of damage or corrosion. Replace any faulty components.
- Clear Code: After addressing the underlying issue, clear the trouble code from the ECM's memory using the OBD-II scanner.
- Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the check engine light does not reappear.
- Emissions Test: If the vehicle previously failed emissions testing due to the P1925 code, have the emissions system retested to ensure it now meets requirements.
Cost to Fix P1925 Mercury
The cost of repairing a P1925 code for a Mercury vehicle can vary depending on the specific cause of the issue. On average, the repair cost for this type of problem ranges from $100 to $300, including parts and labor. However, it's important to note that labor rates and diagnostic fees can vary between auto repair shops. It's advisable to contact local repair shops to get a more accurate estimate based on your specific vehicle and location.
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