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

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0619 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

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. 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.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0619 DIAGNOSTIC Get a fair and transparent estimate upfront

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.

trouble codes
Check Engine Light
P0619

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0619 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,743

Rating Summary
4,361
185
47
28
122
4,361
185
47
28
122

Oreste

12 years of experience
108 reviews
Oreste
12 years of experience
Nissan Altima - Check Engine Light is on - Hialeah, Florida
Showed up quick, and went straight to inspecting a brake light on the dash issue. He found the issue, fixed it, and showed me exactly what was wrong. Thank you!

Daniel

9 years of experience
58 reviews
Daniel
9 years of experience
Honda Fit - Check Engine Light is on - Chicago, Illinois
Told me everything I needed to know and switch out after the inspection. So, I scheduled another service the next day for all the fixes, or fluid maintenance.

Patrick

31 years of experience
1032 reviews
Patrick
31 years of experience
Hyundai Santa Fe - Check Engine Light is on - Austin, Texas
Even after working on my car, he took the time to explain what he did, the parts, and any next steps. Very knowledgeable!

Joe

12 years of experience
22 reviews
Joe
12 years of experience
Toyota 4Runner - Check Engine Light is on - Sacramento, California
Joe was very thorough in his inspections, and his knowledge & experience was clear in his explanations of what was wrong with my car. I really appreciated his recommendations, and the fact that he worked so efficiently that it cut down on time... I would definitely book with him again.

More related articles

Rules of the Road For Iowa Drivers
Driving Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in your own state, that does not mean you know them in all...
How to Get a Louisiana Driver's Permit
The The Louisiana Office of Motor Vehicles requires all teen drivers to participate in a graduated driver's licensing program. The first step in this program is to obtain a learner’s permit, which graduates to a full license as the driver...
Veteran and Military Driver Laws and Benefits in Idaho
The The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the past, or are current active military members. Vehicle registration benefits Disabled veterans with a...

Related questions

P0301 and P0411 codes on vw Passat 2003 1.8lt turbo

Fault code P0301 is a misfire on cylinder # 1 and P0411 is a fault for Incorrect Secondary Air Injection. Trouble code P0301 is most likely due to a faulty ignition coil. To verify before purchasing one, try swapping say...

Cylinder 4 misfire

It sounds like you may need an ignition control module. It's a small device mounted around the right front of the engine compartment. It has a plug with about a dozen wires connected. The module has a separate channel for...

2012 GMC Sierra 2500HD No Blend Door Working

Hello, you are going to need a diagnostic chart for this type of issues. The chart gives you a process to a path of repair or replacement for each code. When you have many system codes you would first check...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com