2025 Jeep Compass Fuel Gauge Reads Empty After Filling

Owners of the 2025 Jeep Compass may notice the fuel gauge indicating an empty tank or the low fuel light remaining illuminated, even immediately after the tank has been filled. This issue, described in Stellantis manufacturer communication S2508000040, can lead to confusion and range anxiety, as the vehicle's fuel level is not accurately displayed. This communication specifically addresses the "Low Fuel Light On or Reads Empty After Filling Tank" symptom.

Symptoms

The primary symptom is the fuel gauge displaying an inaccurate reading, specifically showing the tank as empty or very low, despite being full. Owners will observe the verbatim message or behavior: "Low Fuel Light On or Reads Empty After Filling Tank". A technician using a scan tool would also observe that the Powertrain Control Module (PCM) is displaying a reading indicating low fuel after filling, even when the tank is full.

Diagnosis and Trigger Conditions

When diagnosing the Jeep Compass fuel gauge empty condition, technicians should first confirm the PCM's voltage reading indicates a low fuel state, even after a recent fill-up. Crucially, this diagnostic procedure applies when there are no Diagnostic Trouble Codes (DTCs) present in the vehicle's system. If DTCs are present, they should be addressed first as they may indicate a different underlying problem. Technicians may refer to diagnostic tables that correlate fuel level readings with typical resistance of the level sensor (Ohms) and raw voltage signal input (volts) for reference.

Repair Procedure Summary

Stellantis manufacturer communication S2508000040 outlines a two-step repair process for the Jeep Compass fuel gauge empty problem:

Step 1: Body Control Module (BCM) Reset

If the PCM's voltage reading indicates a low fuel condition without any DTCs, the first recommended action is to perform a reset of the Body Control Module (BCM). This reset is carried out using the wiTECH – Guided Diagnostics system. After the reset, the technician must observe the fuel level data. If the PCM now reads accurately, indicating the correct fuel level, no further service is required.

Step 2: Fuel Pump Module Connector Inspection

If the fuel gauge continues to display inaccurate readings after the BCM reset, the next step involves inspecting connector D6602B at the Fuel Pump Module. Technicians will need to refer to the service panel access information found under "09 - Engine, 2.0L / Fuel System / ASSEMBLY, Fuel Pump / Removal and Installation" to gain access to the fuel pump module.

The connector D6602B should be carefully examined for improper seating or any terminal damage. An improperly seated connector might appear functional but prevent proper signal transmission. If terminal damage is found, it must be repaired as needed. If no terminal damage is present, the connector should be securely unseated and then re-seated. The document highlights the importance of ensuring the CPA (yellow lock) is fully seated and the black connector is fully seated for a correct and functional connection. Technicians are advised to use the "Push-Pull-Push method" to validate a secure connection, ensuring the secondary yellow lock is activated. After securing the connector, proper fuel level readings should be confirmed to complete the repair.

Verification

After performing any repair steps, the vehicle must be started to verify the fuel level gauge shows the corresponding level of fuel as expected. If the fuel level gauge is now showing the correct amount, the vehicle can be released to the customer.

Important Warnings

This document, STAR Online Publication S2508000040, does not authorize warranty repairs. It serves as a record of past experiences and does not provide conclusions about what might be wrong with a vehicle. Instead, it captures previous cases similar or related to the vehicle symptom or condition. Technicians are considered the experts and are responsible for deciding on the appropriate course of action.

NHTSA ID: S2508000040