Kia P0451 Code is an engine performance issue that is related to the EVAP Pressure Sensor. The code is triggered when the PCM detects a signal variation of less than 15 mV from the FTP sensor which, in turn, is indicative of a malfunction in the EVAP Pressure Sensor. This can have a negative impact on engine performance and, in some cases, cause complete failure. In order to address this issue, it is important to identify the root cause and create a plan of action based on the causes and potential solutions. In this article, we will outline the causes and solutions to the Kia P0451 Code so that you can take the necessary steps to resolve the issue.
Causes and Solutions for Kia P0451 Code
| Cause | Solution |
|---|---|
| High resistance in FTP Sensor Signal or Ground Circuit | Check the FTP Sensor Signal and Ground Circuit for any signs of damage or wear and replace as needed. |
| FTP Sensor is Damaged or Out of Calibration | Replace the FTP Sensor and recalibrate. |
| EVAP Canister Close Valve (CCV) is Stuck Closed | Replace the EVAP Canister Close Valve (CCV). |
| PCM has Failed | Replace the PCM and/or reset the code. |
High Resistance in FTP Sensor Signal or Ground Circuit
When the PCM detects a signal variation of less than 15 mV from the FTP sensor, it triggers the Kia P0451 Code. This could be due to high resistance in the FTP Sensor Signal or Ground Circuit. It is important to check the FTP Sensor Signal and Ground Circuit for any signs of damage or wear, and replace as needed.
FTP Sensor is Damaged or Out of Calibration
Another potential cause of the Kia P0451 Code is a damaged or out of calibration FTP Sensor. If this is the case, the FTP Sensor must be replaced and recalibrated.
EVAP Canister Close Valve (CCV) is Stuck Closed
The EVAP Canister Close Valve (CCV) can become stuck in the closed position, which can cause the Kia P0451 Code to be triggered. If this is the case, the EVAP Canister Close Valve (CCV) must be replaced.
PCM has Failed
In some cases, the issue causing the Kia P0451 Code is a failed PCM. If this is the case, the PCM must be replaced and/or the code must be reset.
Conclusion
The Kia P0451 Code is an engine performance issue that is related to the EVAP Pressure Sensor. In order to address this issue, it is important to identify the root cause and create a plan of action based on the causes and potential solutions. The causes and solutions for the Kia P0451 Code can include high resistance in the FTP Sensor Signal or Ground Circuit, a damaged or out of calibration FTP Sensor, an EVAP Canister Close Valve (CCV) that is stuck closed, or a failed PCM. By following the steps outlined in this article, you can take the necessary steps to resolve any Kia P0451 Code issue.
https://www.youtube.com/watch?v=HEPy6hroZ1I