Having a Saturn vehicle with the P1779 code can be a daunting problem to tackle. It is important to understand the root cause of the code, as well as the possible solutions, in order to get your vehicle back up and running. This code is related to the Engine Torque Delivered To TCM Signal, and is triggered when the engine has been running for five seconds, the system voltage is over 10.0v, Fuel Cutoff is inactive, and the Transmission Control Module (TCM) did not receive the required information from the Power Control Module (PCM) over the CAN data bus. To help you understand the cause of this code and what can be done to fix it, below is a table that outlines the potential causes and solutions.
Causes and Solutions for Saturn P1779 Code
| Cause | Solution |
|---|---|
| Perform an Onboard Diagnostic System Check of the PCM | Replace any damaged or faulty parts |
| The PCM is not sending the required information to the TCM | Check for any trouble codes related to the CAN data bus |
| PCM has failed | Replace the PCM |
| Check for loose wiring | Secure all wiring to the correct location |
Saturn vehicles with the P1779 code can be a real headache to diagnose and fix. The code is triggered when the engine has been running for five seconds, the system voltage is over 10.0v, Fuel Cutoff is inactive, and the Transmission Control Module (TCM) did not receive the required information from the Power Control Module (PCM) over the CAN data bus. This can be caused by a variety of issues, ranging from loose wiring to an electrical component failure. It is important to know the potential causes and solutions of this code in order to get your car back up and running. Fortunately, by using the table below, you can quickly and easily identify the cause and find the necessary solution to get your vehicle back on the road.
Onboard Diagnostic System Check of the PCM
One of the first things that should be done when diagnosing the P1779 code is to perform an Onboard Diagnostic System Check of the PCM. This check will help determine if any of the parts related to the PCM are damaged or faulty. If any parts are damaged or malfunctioning, they should be replaced or repaired before continuing.
PCM not Sending Required Information to TCM
If the Onboard Diagnostic System Check does not reveal any problems with the PCM, the next step is to check if the PCM is sending the required information to the TCM. If the PCM is not sending the required information, the cause could be a trouble code related to the CAN data bus. It is important to check for any trouble codes in order to determine the cause of the P1779 code.
PCM Failure
If all else fails, it is possible that the PCM has failed. If this is the case, the PCM will need to be replaced in order to get the vehicle back up and running.
Conclusion
The Saturn P1779 code can be a tricky one to diagnose and fix. It is important to know the potential causes and solutions of this code in order to repair the vehicle. Fortunately, by using the table above, you can quickly and easily identify the cause and find the necessary solution to get your vehicle back on the road. If all else fails, it may be time to replace the Power Control Module (PCM) in order to resolve the Saturn P1779 Code.
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