Chevrolet Code P1689 stands for Traction Control Delivered Torque Output Circuit, which is a technical code indicating a potential problem with the Chevrolet’s traction control system. This code is triggered when the voltage level in the output circuit for the traction control delivered torque output circuit is detected as being improper. In order to set this diagnostic trouble code (DTC), the ignition must be on, and the above conditions need to persist for at least 30 seconds. A number of possible causes can lead to this code being triggered, such as poor connection of the PCM, damaged PCM harness, or defective PCM. It is important to identify and address the root cause of this code in order to avoid further damage to the car.
Causes and Solutions for Chevrolet Code P1689
| Cause | Solution |
|---|---|
| Poor connection at the PCM | Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. |
| Damaged harness | Inspect the harness for cuts, abrasions, broken wires, and corrosion. |
| Defective PCM | Replace the PCM with a new one. |
| Failed traction control | Diagnose and repair the traction control system. |
Poor Connection at the PCM
When the Chevrolet Code P1689 is triggered, the first thing that needs to be done is to check the connection of the PCM. Poor connection of the PCM can cause the code to be triggered, and therefore, it is essential to inspect the harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. If the connection is found to be faulty, then it should be repaired or replaced.
Damaged Harness
The second cause of the Chevrolet Code P1689 is a damaged harness. Damaged harness can lead to the code being triggered, and therefore, it is essential to inspect the harness for cuts, abrasions, broken wires, and corrosion. If the harness is found to be damaged, then it should be repaired or replaced.
Defective PCM
The third cause of the Chevrolet Code P1689 is a defective PCM. A defective PCM can lead to the code being triggered, and therefore, it is essential to diagnose and replace the PCM with a new one.
Failed Traction Control
The fourth cause of the Chevrolet Code P1689 is a failed traction control system. A failed traction control system can lead to the code being triggered, and therefore, it is essential to diagnose and repair the traction control system.
Conclusion
Chevrolet Code P1689 is an error code that is triggered when the voltage level in the output circuit for the traction control delivered torque output circuit is detected as being improper. There are various possible causes of this code, such as poor connection of the PCM, damaged PCM harness, or defective PCM, and failed traction control system. To avoid further damage to the car, it is important to identify and address the root cause of this code. The best way to take care of this Chevrolet Code P1689 is to inspect the PCM connection, check the harness for damage, replace the PCM if necessary, and diagnose and repair the traction control system.
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