What does it mean?
This generic powertrain diagnostic trouble code (DTC) typically applies to many OBD-II vehicles. This may include, but is not limited to, vehicles from Jeep, Mazda, Ford, Dodge, etc.
A stored P0610 code means that the Powertrain Control Module (PCM) has detected an internal control module problem. The malfunction is related to the part of the PCM that recognizes, monitors, and controls specific vehicle options.
Whenever the ignition is turned on and the PCM is powered up, controller self-tests are performed. In addition to running internal controller self-tests, the Controller Area Network (CAN) also compares signals from each individual module to ensure the various controllers are communicating correctly.
If the PCM does not recognize the vehicle’s equipment options or if certain option features do not match the Vehicle Identification Number (and another protocol), a P0610 code will be stored and a Malfunction Indicator Lamp (MIL) may illuminate. Depending on the perceived severity of the malfunction, several failure cycles may be required for MIL illumination.
Photo of a PCM with the cover removed:
P0610 Powertrain Control Module PCM
How severe is this DTC?
Internal control module codes should always be taken seriously. A stored P0610 code could lead to various driving problems, including a no-start condition.
What are some of the symptoms of the code?
Symptoms of a P0610 fault code may include:
Engine driveability issues
Irregular transmission shifting (automatic)
Other stored codes
Reduced fuel economy
What are some common causes of the code?
Causes
of this code may include:
Faulty PCM
PCM programming error
Open or shorted circuit or connectors in the CAN harness
PCM power source failure
Insufficient control module ground
What are the P0610 troubleshooting steps?
Even for the most experienced and well-equipped professional technician, diagnosing a P0610 code can prove very challenging. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.
If ECM/PCM power codes are present, they will obviously need to be rectified before attempting to diagnose a P0610.
There are several preliminary tests that can be performed before declaring a controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be required.
Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You’ll want to note this information, just in case the code proves to be intermittent. After recording all relevant information, clear the codes and test-drive the vehicle until the code resets or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition that caused the P0610 to be stored may even need to worsen before a diagnosis can be made. If the code resets, continue with this short list of preliminary tests.
When trying to diagnose a P0610, information can be your best tool. Search your vehicle information source for Technical Service Bulletins (TSBs) that correlate the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will assist you significantly.
Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring schematics, and diagnostic flowcharts related to the specific code and vehicle in question.
Use the DVOM to test the controller’s power fuses and relays. Test and replace blown fuses as needed. Fuses should be tested with the circuit loaded.
If all fuses and relays appear to be functioning as expected, a visual inspection of the wiring and harnesses related to the controller is necessary. You will also want to check the chassis and engine ground junctions. Use your vehicle information source to obtain ground locations for the related circuits. Use the DVOM to test ground integrity.
Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially by water, should be considered faulty.
If the controller’s power and ground circuits are intact, suspect a faulty controller or a controller programming error. Replacing the controller will require reprogramming. In some cases, you can purchase pre-programmed controllers through aftermarket sources. Other vehicles/controllers will require on-board reprogramming that can only be performed by a dealership or another qualified source.
Unlike most other codes, P0610 is likely caused by a faulty controller or a controller programming error
Test the system ground integrity by connecting the DVOM’s negative test lead to ground and the positive test lead to battery voltage