AutoCodes – Generic – P115B

P115B Code - Low Fuel Level - Forced Engine Shutdown

Quick Answer

Fuel level information is sent from the instrument cluster to the Powertrain Control Module (PCM) on the communication link. Common causes include Low fuel, Fualty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P115B indicates Low Fuel Level - Forced Engine Shutdown.
Common causes: Common causes include Low fuel, Fualty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 12,702

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 26, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P115B Description

Fuel level information is sent from the instrument cluster to the Powertrain Control Module (PCM) on the communication link. If an excessively low fuel level input message is received by the PCM from the instrument cluster, the PCM limits the fuel rail pressure (FRP).

OBDII Code P115B - Low Fuel Level - Forced Engine Shutdown - AutoCodes.com — P115B Code - Low Fuel Level - Forced Engine Shutdown

What does this mean?

What are the Possible Causes of the DTC P115B?

Low fuel
Fualty Fuel Level Sensor
Fuel Level Sensor harness is open or shorted
Fuel Level Sensor circuit poor electrical connection

How to Fix the DTC P115B?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Check that there is sufficient fuel in the tank. Check the fuel level sensor and circuits. If no fault is found in the circuits, install a new fuel level sensor. Clear all the codes and test for normal operation.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P115B code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P115B code?

Need more information on how to fix the P115B code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P115B BMW — Mass Or Volume Air Flow 'A' Fallen Below
P115B Ford — Low Fuel Level - Forced Engine Shutdown
P115B Land Rover — Low Fuel Level - Forced Engine Shutdown
P115B MINI — Mass Or Volume Air Flow 'A' Fallen Below

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.