Engine-CodesGeneric – P1925

P1925 Code - Fuel Additive Level Circuit High

Quick Answer

The P1925 diagnostic trouble code indicates that there is a problem with the fuel additive level circuit being too high. Common causes include Faulty fuel additive level sensor, Wiring issues or poor connections, Corrosion or damage to the sensor or wiring. 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 indicates Fuel Additive Level Circuit High.
Common causes
Common causes include Faulty fuel additive level sensor, Wiring issues or poor connections, Corrosion or damage to the sensor or wiring.
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.
Table of contents Created and updated by William Orellana on Aug 18, 2024
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Code P1925 Description

The P1925 diagnostic trouble code indicates that there is a problem with the fuel additive level circuit being too high. Modern vehicles are equipped with systems that monitor the level of fuel additives in the tank to ensure optimal engine performance and emissions control. When this code is triggered, it means that the engine control module (ECM) has detected a voltage signal from the fuel additive sensor that is higher than the expected range. This could be due to a malfunction in the sensor itself, a wiring issue, or a problem with the ECM.

OBDII Code P1925 - Fuel Additive Level Circuit High
P1925 Code - Fuel Additive Level Circuit High

Common Causes of P1925

  1. Faulty fuel additive level sensor
  2. Wiring issues or poor connections
  3. Corrosion or damage to the sensor or wiring
  4. ECM malfunction
  5. Contaminated fuel additives

Symptoms of P1925

  1. Check Engine Light illuminated
  2. Decreased fuel efficiency
  3. Rough idling or engine misfires
  4. Difficulty starting the engine
  5. Reduced engine performance

How to Fix P1925

  1. Diagnose the issue by checking the fuel additive level sensor and wiring for any damage or corrosion.
  2. Test the sensor's voltage output using a multimeter to determine if it is within the correct range.
  3. Replace the fuel additive level sensor if it is faulty.
  4. Repair any damaged wiring or connections.
  5. Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1925

The cost of repairing a P1925 code can vary depending on the specific cause of the issue. In general, replacing a fuel additive level sensor can cost between $100 and $300, while repairing wiring issues may range from $50 to $150. Labor costs can add another $80 to $150 per hour, with total repair costs typically falling between $200 and $500. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

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Code P1925 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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