OBD Guide

P238F

Water in Fuel Condition - Sensor B

P238F is an OBD-II diagnostic trouble code meaning: Water in Fuel Condition - Sensor B. Common causes: refueling with low-quality fuel, moisture condensation in the fuel tank. Estimated repair cost: $17–56.

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

Symptoms

  • Difficulty starting the engine
  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Dashboard warning display

Causes

  • Refueling with low-quality fuel
  • Moisture condensation in the fuel tank
  • Water in fuel sensor malfunction
  • Damage to the fuel tank or its seal
  • Problems with the fuel filter

How to Fix

  1. Check the fuel for water
  2. Drain the fuel tank
  3. Replace the fuel filter
  4. Check the serviceability of the water in fuel sensor
  5. Replace sensor if necessary

Related codes

Error P238F by Vehicle Brand

FAQ

What does the P238F code mean?

P238F is an OBD-II diagnostic trouble code that indicates: Water in Fuel Condition - Sensor B

What causes a P238F error code?

The most common causes of P238F include: Refueling with low-quality fuel; Moisture condensation in the fuel tank; Water in fuel sensor malfunction; Damage to the fuel tank or its seal.

How do I fix a P238F diagnostic trouble code?

To fix P238F: Check the fuel for water. Drain the fuel tank. Replace the fuel filter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P238F?

Limited driving only, diagnose soon

How much does it cost to fix P238F?

The estimated repair cost for P238F is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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