When it comes to the Cadillac Code P0386, this code indicates that the Crankshaft Position Sensor ‘B’ is not performing at the expected level. This code is often caused by issues with the CKP Sensor ‘B’ signal circuit, including open or shorted circuits and open VREF circuits. In order to provide a safe and reliable source of information, the National Highway Traffic Safety Administration (NHTSA) has created an official service bulletin (PIP5094) to address this issue. In this article, we will provide an overview of the causes and solutions for the Cadillac Code P0386.
Causes and Solutions for Cadillac Code P0386
| Cause | Solution |
|---|---|
| CKP Sensor ‘B’ signal circuit is open (an intermittent fault) | Check the CKP Sensor ‘B’ signal circuit connection and repair or replace the circuit as needed. |
| CKP Sensor ‘B’ signal circuit is shorted to ground (intermittent) | Check for any faulty wiring and repair or replace the wiring as needed. |
| CKP Sensor ‘B’ VREF circuit is open (an intermittent fault) | Check the CKP Sensor ‘B’ VREF circuit connections and repair or replace the circuit as needed. |
| CKP Sensor ‘B’ ground circuit is open (an intermittent fault) | Check for any open or loose connections in the CKP Sensor ‘B’ ground circuit and repair or replace the circuit as needed. |
Open or Shorted CKP Sensor ‘B’ Signal Circuit
The Cadillac Code P0386 is caused by an open or shorted CKP Sensor ‘B’ signal circuit. If the circuit is open, then this can cause an intermittent fault, which can cause the code to be triggered. To fix this issue, the CKP Sensor ‘B’ signal circuit must be checked for any faulty connections and repaired or replaced as needed.
Open CKP Sensor ‘B’ VREF Circuit
An open CKP Sensor ‘B’ VREF circuit can also cause the Cadillac Code P0386. This is an intermittent fault, so it can be difficult to diagnose. If this is the cause, then the CKP Sensor ‘B’ VREF circuit must be checked for any open connections and repaired or replaced as needed.
Open or Loose CKP Sensor ‘B’ Ground Circuit
The Cadillac Code P0386 can also be caused by an open or loose CKP Sensor ‘B’ ground circuit. This can be an intermittent fault, so it must be checked for any open or loose connections and repaired or replaced as needed.
Conclusion
The Cadillac Code P0386 indicates that the Crankshaft Position Sensor ‘B’ is not performing as expected. The NHTSA has issued an official service bulletin to address this issue, and it can be caused by any of the following: an open or shorted CKP Sensor ‘B’ signal circuit, an open CKP Sensor ‘B’ VREF circuit, or an open or loose CKP Sensor ‘B’ ground circuit. To fix the issue, the circuit must be checked for any faulty connections and repaired or replaced as needed. To ensure a safe and reliable source of information, it is strongly recommended to follow the guidelines provided in the NHTSA service bulletin for the Cadillac Code P0386.
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