P0619 Alternative Fuel Control Module RAM/ROM Error

OBD2 Code: P0619

Description: Alternative Fuel Control Module RAM/ROM Error

Definition: This code indicates that there is a malfunction in the Random Access Memory (RAM) or Read-Only Memory (ROM) of the alternative fuel control module. The error suggests that the module is unable to properly read, write, or store data necessary for controlling alternative fuel operations.

p0619 – Alternative Fuel Control Module RAM/ROM Error

Severity: Moderate

Common Causes

p0619 – Alternative Fuel Control Module RAM/ROM Error

Common Causes:

• Faulty alternative fuel control module
• Corroded or damaged wiring related to the alternative fuel control module
• Issues with the powertrain control module (PCM)
• Software issues within the alternative fuel control module

 

Common Misdiagnosis

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OBD2 Code: P0619

Description: Alternative Fuel Control Module RAM/ROM Error

Common Misdiagnosis: Replacing the alternative fuel control module without checking for wiring issues or software updates.

 

Common Diagnostic Steps

OBD2 Code: P0619

Description: Alternative Fuel Control Module RAM/ROM Error

Common Diagnostic Steps:

• Verify the code with an OBD-II scanner and clear it to see if it returns.
• Inspect the wiring and connectors related to the alternative fuel control module for any signs of damage or corrosion.
• Check the battery voltage and ensure it’s within the specified range, as low voltage can affect module performance.
• Test the power and ground circuits of the alternative fuel control module using a multimeter.
• If equipped, update or reprogram the software of the alternative fuel control module to ensure it’s up-to-date.
• If no issues are found in wiring or connections, consider replacing the alternative fuel control module after verifying all other components are functioning correctly.