Fault code P0619 is called “Alternative Fuel Control Module (KAM) Error” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II.
Technical description and explained code P0619
Stored code P0619 means that the Powertrain Control Module (PCM) has detected a fault in the Alternative Fuel Control Module (AFCM). The problem has occurred in the RAM/ROM part of the AFCM/PCM module.
This code applies only to vehicles using alternative fuels such as natural gas or electricity. The installed AFCM and PCM modules can be separated from each other, but more often they are integrated into a single module. This increases controller efficiency and saves space, time and money for automakers.
Each time the ignition is turned on and power is applied to the PCM, several self-tests of the controller are performed. In addition to performing internal controller self-tests, the controller network (CAN) is also tested.
Which is also used to compare the signals from each individual module. This is to make sure that the different controllers are communicating properly.
When monitoring the performance of the AFCM/PCM and RAM/ROM modules, code P0619 will be stored if a problem is detected. The Malfunction Indicator Light (MIL) may then illuminate.
Depending on the perceived severity of the fault, it may take several failure cycles for the MIL to illuminate.
Symptoms of vehicle malfunctions
The main signal that an error P0619 has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.
It can also be warning signs such as:
- The “Check engine” control lamp on the control panel will light up (the code will be stored as a fault).
- Other related fault codes may also be present.
- Decreased engine power.
- The engine will stall or start poorly.
Internal control unit codes should always be taken seriously. A stored P0619 code can lead to various handling problems as useful controller memory can be lost.
Factors that can cause this error code
The error code P0619 can mean that one or more of the following problems have occurred:
- Open or short in the CAN bus circuit or connectors.
- Bad grounding of the control unit.
- Faulty AFCM/PCM power supply.
- AFCM/PCM programming error.
- Sometimes a faulty AFCM/PCM module is the cause.
How to fix or reset OBD-2 code P0619
Some suggested steps for troubleshooting and fix the error code P0619:
- Read all stored data and error codes with an OBD-II scan tool.
- Clear the error codes from the computer memory.
- Test-drive the vehicle to find out if fault P0619 appears again.
- Visually inspect the CAN bus wires and connectors.
- Check the AFCM/PCM ground and power supply.
- If the error persists, check the AFCM/PCM.
Diagnose and repair of problems
If AFCM/PCM power codes are present, they must be cleared before attempting to diagnose fault P0619.
Next, connect the scan tool to the vehicle’s diagnostic port and retrieve any stored codes and data. Make a note of this information in case the code turns out to be intermittent.
After recording all the necessary information, clear the codes and test drive the vehicle until the code is cleared or the PCM goes into standby mode. If the PCM goes into standby mode, the code is intermittent and will be more difficult to diagnose.
Check the controller and electrical parts
Use a multimeter to check the fuses and power relays on the controller. Check and replace blown fuses if necessary. Fuses should be checked with the circuit loaded.
If all fuses and relays are working as they should, a visual inspection of the controller wiring and harnesses should be performed. Chassis and motor grounding should also be checked.
Visually inspect the system controllers for signs of water, temperature, or collision damage. Any controller that is damaged, especially by water, should be considered faulty.
If the power and ground circuits of the controller are intact, it is likely that the controller itself is defective or that a programming error exists. Reprogramming the control module will be necessary to replace it.
Unlike most other codes, fault P0619 is most likely caused by a faulty controller or its programming error.
Some aftermarket PCM manufacturers offer preprogrammed controllers for certain models. Contact your auto parts supplier with the vehicle serial number, mileage, and other pertinent information.
On which vehicles does this problem occur most frequently
Fault code P0619 can occur on different vehicles but there are statistics on which brands this occurs most often. Here is a list of some of them:
- Chrysler
- Dodge
- Ford
- Ssangyong
Fault code P0619 can sometimes be found with other errors. The most common are the following: P0611, P0612, P0618, P0627, P0628, P0629, P062A, P062B.
