OBD Guide

P238A

Water in Fuel Sensor B Circuit

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced engine power
  • Problems starting the engine
  • Unstable engine operation at idle
  • Increased fuel consumption

Causes

  • Water in fuel sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Sensor contact corrosion
  • Water entering the fuel tank

How to Fix

  1. Check for water in the fuel tank
  2. Inspect the water in fuel sensor for damage
  3. Check the integrity of wiring and connectors
  4. Replace sensor if necessary
  5. Drain the fuel system

Related codes

Error P238A by Vehicle Brand