P0619 OBD-II Trouble Code: Alternative Fuel Control Module RAM/ROM Error

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Cost of diagnosing the P0619 code

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 for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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P0619 code definition

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.

What the P0619 code means

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.

What causes the P0619 code?

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.

What are the symptoms of the P0619 code?

Symptoms of a P0619 trouble code include engine stalling, rough idling, poor acceleration, problems shifting, and a reduction in the vehicle's fuel efficiency.

How does a mechanic diagnose the P0619 code?

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:

  • Begin by visually inspecting all wiring, connectors, and other components, looking for any fault, corrosion, or other damage.
  • Hook up the scanner to the diagnostic connector and download any stored codes and freeze frame data. This allows the mechanic to clear the codes in the order that they were stored.
  • Using the specialized scanner, test the pins of the CAN Bus. Disconnect any related control modules before doing so to prevent damage and memory loss. Also, install a memory saving device to help with memory loss prevention.
  • Use the digital volt/ohmmeter to check the reference voltage and ground signal of the system circuitry, connectors, and fuses. Test the control module ground circuits for continuity with the battery ground.
  • In addition, the mechanic can use a CAN Bus system wiring diagram to check the continuity between the related control modules with the digital volt/ohmmeter.
  • Clear the code and test the system to see if the trouble code returns.

Common mistakes when diagnosing the P0619 code

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.

How serious is the P0619 code?

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.

What repairs can fix the P0619 code?

When repairing a P0619 trouble code, the mechanic should perform the following:

  • Replace any damaged or faulty wiring, connectors, or components. This includes circuitry associated with the various related control modules. When replacing wiring within the CAN Bus harness, it is easier to replace the whole harness as opposed to individual wiring.
  • Replace any faulty control modules, especially the alternative fuel control module, as this is often the cause of the storage of a P0619 trouble code.

Need help with a P0619 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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Martin

20 years of experience
14 reviews
Martin
20 years of experience
Very knowledgeable..polite
2007 MERCEDES-BENZ C230 - CHECK ENGINE LIGHT IS ON - KATY, TEXAS

Jeff

10 years of experience
30 reviews
Jeff
10 years of experience
Jeff was very friendly, very experienced, and shared information with me that prevented me from needing additional parts replaced. As it turns out, the service that I required can only be done by the dealer - since it is a software upgrade. So my repair is not over yet.
2006 HONDA CIVIC - CHECK ENGINE LIGHT IS ON - OWINGS MILLS, MARYLAND

Chet

38 years of experience
393 reviews
Chet
38 years of experience
Explained what happened with my car and showed him a piece of metal that came off somewhere from my car. He never hooked up the diagnostic kit to get the warning codes off. My invoice shows PO300 code but my car battery was dead so I don't know if that is why the test was not performed but then how do you get the PO300 code? Then I had told him about the oil leak but the car was never jacked up or inspected underneath. He never saw the hole in the engine block, I am assuming because I have a piece of metal that is what it is from. Since nothing was actually performed on my car (except visual inspection) and he said it was not worth repairing the engine, I don't see why I was still charged $100 dollars. He was nice enough to help push the car over in the garage so I can get my other car into the garage and gave me pointers on how to buy a used car and what to look for.
2006 HYUNDAI SONATA - CHECK ENGINE LIGHT IS ON - SAN DIEGO, CALIFORNIA

Michael

21 years of experience
15 reviews
Michael
21 years of experience
Thank you very much Michael for grate service!
2004 MERCEDES-BENZ S430 - CHECK ENGINE LIGHT IS ON - SAN DIEGO, CALIFORNIA

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