OBD Guide

P25B1

Fuel Level Sensor B Stuck

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Incorrect display of fuel level on the dashboard
  • Fuel gauge needle does not move
  • False low fuel level alarm
  • Incorrect calculations of fuel consumption by the on-board computer

Causes

  • Mechanical jamming of the sensor float
  • Sensor contamination with fuel deposits
  • Worn or damaged sensor potentiometer
  • Problems with wiring to the fuel level sensor
  • Sensor contact corrosion

How to Fix

  1. Check the condition of fuel level sensor B
  2. Clean the sensor from dirt
  3. Replace the fuel level sensor if necessary
  4. Check the integrity of wiring and contacts
  5. Reset the error code and check the system operation

Related codes

Error P25B1 by Vehicle Brand