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P0600 is a diagnostic trouble code (DTC) for "Serial Communication Link Malfunction". 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 P0600 code is a diagnostic trouble code that points to a malfunction in the communication link of the ECU. This code may be seen with a wide variety of other codes in addition to ABS and traction control system codes.
P0600 means that the ECU has lost the connection with one of its many controllers more than once. When this code is set the ECU triggers the Check Engine Light to be displayed on the dashboard and a failsafe mode enacted.
The failsafe mode is to prevent further damage and protect the vehicle. Failsafe mode will remain in effect until the normal operation is detected or the vehicle is repaired.
The first step for any qualified technician is to use the scan tool to check for any codes including history and pending codes.
Freeze frame data for every code will be checked to see what conditions the vehicle was under when the code was triggered.
All the codes will be cleared and a test drive performed to duplicate the symptoms.
Next, a visual inspection will be performed looking for damaged, worn, or loose components.
Battery voltage will be checked next to make sure it is within specifications
Next, a multimeter will be used to check for proper continuity of the power and ground circuits of the ECU.
Lastly, the manufacturer’s ECU testing procedure will be done. This will vary from vehicle to vehicle depending on make and model.
The most common mistake seen is when the ECU claimed to be faulty when the low battery voltage was the real cause.
Always follow diagnostic procedures without skipping any steps and complete steps in the proper order to avoid mistakes with P0600.
The P0600 malfunction may cause intermittent and erratic symptoms that affect normal operation of the vehicle.
If severe symptom are found, the vehicle should not be driven until it has been repaired. With P0600 the ABS system and traction control system can become disabled so driving in poor weather should be avoided if the ABS light and Traction Control Light are displayed on the dashboard.
The ECU controls almost all of the cars systems and when a fault occurs it may disable a wide variety of operations. Always check for proper voltage when diagnosing the P0600 code as low battery voltage can cause many strange symptoms.
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.