OBD Guide

P115B

Low Fuel Level - Forced Engine Shutdown

P115B is an OBD-II diagnostic trouble code meaning: Low Fuel Level - Forced Engine Shutdown. Common causes: very low fuel level in the tank, fuel level sensor malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$17–56 (est.)

Symptoms

  • Engine stalls without warning
  • Difficulty starting the engine
  • Low fuel indicator flashes
  • Loss of power when driving
  • Error message on the dashboard

Causes

  • Very low fuel level in the tank
  • Fuel level sensor malfunction
  • Problems with the fuel pump
  • Open or short circuit in the fuel level sensor circuit
  • Engine ECU malfunction

How to Fix

  1. Check and add fuel if necessary
  2. Check the operation of the fuel level sensor
  3. Diagnose the fuel pump
  4. Check the fuel level sensor circuit for opens and shorts
  5. If necessary, replace the fuel level sensor

Related codes

FAQ

What does the P115B code mean?

P115B is an OBD-II diagnostic trouble code that indicates: Low Fuel Level - Forced Engine Shutdown

What causes a P115B error code?

The most common causes of P115B include: Very low fuel level in the tank; Fuel level sensor malfunction; Problems with the fuel pump; Open or short circuit in the fuel level sensor circuit.

How do I fix a P115B diagnostic trouble code?

To fix P115B: Check and add fuel if necessary. Check the operation of the fuel level sensor. Diagnose the fuel pump. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P115B?

Do not drive — repair immediately

How much does it cost to fix P115B?

The estimated repair cost for P115B is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat