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P0614 is a diagnostic trouble code (DTC) for "ECM / TCM Incompatible". 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.
The P0614 code means that a fault has occurred in communication between the ECM (engine control module) and the TCM (transmission control module). The PCM notes the fault and sets the code.
Essentially, the P0614 code means that there has been an error in compatibility between your car’s engine control module and transmission control module. The PCM is usually responsible for noting this incompatibility, although another control module may also note it and set the code in the PCM, including the ABS control module, the body control module, the fuel injection control module and more.
There are several possible causes of the P0614 code, including the following:
In many instances, the only symptom you’ll notice is that the Check Engine Light comes on in the dash. However, there may be other symptoms that accompany the P0614 code, including:
The first step a mechanic takes will be to read all the codes stored in the computer. He or she will then clear those codes and test drive the car to see if they reset. However, some vehicles can take up to eight drive cycles to set the P0614 code, so the mechanic will also likely begin inspecting the wiring and connections.
Depending on the equipment on hand, the mechanic may use an advanced scanner to pinpoint the area causing trouble within the circuitry. However, if the mechanic only has a voltmeter and a basic scanner, the process will take longer due to the number of circuits and amount of wiring that must be tested.
If a fault is found within the wiring or a connector/connection, the mechanic will replace the damaged section. However, the most common problem is a faulty PCM. Most modern vehicles combine the ECM and TCM in a single housing called the PCM. If this is faulty, the mechanic will replace it.
The most common mistake when diagnosing the P0614 code is attempting to diagnose the underlying problem based on related symptom codes. For instance, an engine may misfire when the PCM is faulty and set a misfire code. A mechanic attempting to repair the cause of the misfire will miss the fact that the issue has nothing to do with the misfire, and everything to do with the incompatibility between the ECM and TCM.
P0614 is a serious code that can leave you stranded in a worst-case scenario. It can also lead to reduced fuel economy and unreliable engine operation. Have it repaired immediately.
The most common repair for the P0614 code is to replace the car’s PCM. However, it may instead be necessary to replace wiring, connectors, or entire sections of the wiring harness. It can take many hours to simply isolate the cause of the code in many instances.
Diagnosing the cause of the P0614 code can require a great deal of time, experience the right tools, and the right expertise. At YourMechanic, we have the experience, and the tools necessary to quickly and accurately repair your car.
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.