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P0619 is a diagnostic trouble code (DTC) for "Alternative Fuel Control Module RAM/ROM Error". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
A P0619 trouble code indicates a problem in the alternative fuel control module random access memory/read-only memory. In addition to the Powertrain Control Module (PCM), this type of issue can be detected by the following modules: the antilock brake control module, the anti-theft module, the body control module, the climate control module, the cruise control module, the fuel injection control module, the instrument panel control module, proximity alert module, the traction control module, and the turbo control module. One similar code to a P0619 code is a P0618 trouble code.
The storage of a P0619 trouble code indicates that the alternative fuel control module random access memory/read only memory has suffered an error. While most vehicles also illuminate a Check Engine light upon storing the P0619 trouble code, some models require multiple drive cycles, up to eight, before the lamp illuminates.
The most common cause of a P0619 trouble code is a faulty alternative fuel control module. Some other causes can include faulty wiring or connectors within the Control Area Network (CAN) Bus harness, a loose ground strap or broken wire within one of the control modules, and a faulty CAN Bus.
To successfully diagnose a P0619 trouble code, the mechanic needs an OBD-II scanner, a digital volt/ohmmeter, a CAN Bus system wiring diagram, and a specialized CAN scanner. The mechanic also needs to complete the following steps:
When diagnosing trouble codes on the PCM, mechanics need to clear the codes in the order they were stored. A common mistake with a P0619 trouble code occurs when this procedure is not followed. Most often a mechanic will treat the symptoms that occur as a reaction to the communication failure and not the original source of the code, a failure on the part of the Alternative Fuel Control Module RAM/ROM. This subsequently leads to the problem not being fixed and the code returning.
Left unfixed, a P0619 trouble code can lead to problems with the engine in the form of misfires, acceleration, and fuel mileage. In addition, the problems associated with a P0619 trouble code can lead to harsh shifting with the vehicle in question.
When repairing a P0619 trouble code, the mechanic should perform the following:
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