Fault code P0613 is called “Transmission Control Module (TCM) Processor 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 P0613
OBD-II fault code P0613 is defined as “Transmission Control Module Processor Error” on vehicles with automatic transmission. It is set when a programming error or component failure is detected in the TCM.
Automatic transmissions several decades ago functioned without any computer control. But increasing consumer demand for a better driving experience has created a need for more precise control of automatic transmissions.
Note that this code refers specifically to defects or faults in the transmission control module. General defects and faults in the transmission itself will produce other error codes.
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 the controllers internal self-tests, data is exchanged over the CAN bus to compare signals from each individual module. To make sure that the various controllers are communicating properly.
When monitoring TCM operation, if the PCM detects a problem, code P0613 will be stored and the malfunction indicator lamp (MIL) may 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 P0613 has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.
It can also be warning signs such as:
- Check engine control lamp on the control panel will light up (the code will be recorded in the memory as a malfunction).
- Sharp, erratic, or unpredictable gear shifting.
- Transmission may not shift at all.
- Speedometer not working or not working properly.
- Other related trouble codes may also be present.
Fault P0613 is quite serious, as it can cause problems with gear shifting and vehicle handling. To prevent the problem from worsening, it is recommended that the error be corrected as soon as possible.
Factors that can cause this error code
The error code P0613 can mean that one or more of the following problems have occurred:
- Defective TCM/PCM module.
- Faulty TCM/PCM programming error.
- Damaged, corroded wiring or connectors.
- Open or short circuit in CAN circuit.
- Control box fuse blown.
- Low battery voltage.
How to fix or reset OBD-2 code P0613
Some suggested steps for troubleshooting and fix the error code P0613:
- Inspect the wiring for damage, abrasions, breaks, and shorts. If the wiring is damaged, repair or replace it.
- Disconnect and test each CAN bus pin with a special diagnostic scanner.
- Inspect and check the fuse and fusible link.
- Check the condition of the battery pack.
- If the problem persists, the TCM/PCM module may need to be replaced and reprogrammed.
Diagnose and repair of problems
Diagnosing the P0613 code can be a daunting task even for the most experienced and well-equipped technician. However, there are a few preliminary tests that can be performed before calling for service to replace the TCM.
Start with a visual inspection of all visible wires and harnesses associated with the vehicle’s controllers. Using a multimeter, check the ground to the engine and bodywork to make sure they are OK.
Battery connection
To rule out all possibilities of fault P0613, you should visually inspect the wiring, check the voltage on the battery. You should also check the battery terminals and cables for loose connections.
Ensure that the system voltage is as specified in the manual. The charging system is fully operational and the battery is in good condition, begin the diagnostic procedure.
Further Check
Locate the TCM/PCM control unit and inspect it for damage caused by water, heat, or collision. If the TCM is damaged, especially by water, it is likely out of service and needs to be replaced.
Next, check the TCM power supply fuses and relays. Inspect and replace the blown fuses as well as the relay connector.
If the TCM power supply code is also present along with fault P0613, correct it first before troubleshooting this fault.
After the tests are done, recheck the error, if it is still present, the TCM module is most likely defective. Replacing the TCM or any other controller usually requires reprogramming for the specific vehicle.
On which vehicles does this problem occur most frequently
Fault code P0613 can occur on different vehicles but there are statistics on which brands this occurs most often. Here is a list of some of them:
- Audi
- Chrysler
- Dodge (RAM)
- Hyundai
- Jeep
- Land Rover (Evoque, Range Rover)
- Saturn (Ion)
- LADA (Vesta)
Fault code P0613 can sometimes be found with other errors. The most common are the following: P0113, P0606, P0614, P0700.
