OBD Guide
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P1925

Fuel Additive Level Circuit High

P1925 is an OBD-II diagnostic trouble code meaning: Fuel Additive Level Circuit High. Common causes: faulty fuel additive level sensor, short circuit in the sensor circuit. Estimated repair cost: $17–50.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–50 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced efficiency of the exhaust gas cleaning system
  • Possible problems with engine power
  • Unusual fuel additive level readings

Causes

  • Faulty fuel additive level sensor
  • Short circuit in the sensor circuit
  • Problems with the sensor wiring harness
  • Engine control unit malfunction
  • Corrosion of contacts in the sensor circuit

How to Fix

  1. Check the condition of the fuel additive level sensor
  2. Check the integrity of the sensor circuit
  3. Measure sensor resistance
  4. Check connections and contacts in the circuit
  5. If necessary, replace the fuel additive level sensor

Related codes

P1924P1926P1927

FAQ

What does the P1925 code mean?

P1925 is an OBD-II diagnostic trouble code that indicates: Fuel Additive Level Circuit High

What causes a P1925 error code?

The most common causes of P1925 include: Faulty fuel additive level sensor; Short circuit in the sensor circuit; Problems with the sensor wiring harness; Engine control unit malfunction.

How do I fix a P1925 diagnostic trouble code?

To fix P1925: Check the condition of the fuel additive level sensor. Check the integrity of the sensor circuit. Measure sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1925?

Yes, but get it checked soon

How much does it cost to fix P1925?

The estimated repair cost for P1925 is $17–50. Actual cost depends on your vehicle, location, and labor rates.

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