The P0B06: Auxiliary Transmission Fluid Pump Motor Phase W Current fault code refers to an issue with the Phase W current in the auxiliary transmission fluid pump motor. This can be caused by a faulty Phase W current sensor, electrical issues in the Phase W circuit, or a malfunctioning auxiliary transmission fluid pump motor. If this issue is not addressed, it can affect the transmission cooling and lubrication system, potentially leading to performance problems or damage to the transmission.
P0B06 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0B06: Auxiliary Transmission Fluid Pump Motor Phase W Current |
| Is it serious? | Yes, improper Phase W current can affect the motor’s ability to circulate transmission fluid, which is critical for cooling and lubrication. |
| Possible causes | – Faulty Phase W current sensor in the auxiliary transmission fluid pump motor – Electrical issue in the Phase W current circuit – Faulty auxiliary transmission fluid pump motor |
| How to diagnose? | – Measure Phase W current of the auxiliary transmission fluid pump motor – Inspect wiring and connections for Phase W current sensor – Test the auxiliary transmission fluid pump motor |
P0B06 Meaning
The P0B06: Auxiliary Transmission Fluid Pump Motor Phase W Current fault code indicates a problem with the Phase W current in the auxiliary transmission fluid pump motor. The Phase W current is crucial for driving the motor that circulates transmission fluid, which is vital for the cooling and lubrication of the transmission. If this current is faulty or incorrectly measured, it could reduce the motor’s ability to maintain optimal transmission cooling and lubrication.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any related fault codes that may provide additional context for the Phase W current issue. | OBD-II Scanner |
| Measure Phase W Current | Use a multimeter or diagnostic tool to measure the Phase W current of the auxiliary transmission fluid pump motor. Compare the readings with manufacturer specifications to verify the current is within the expected range. | Multimeter, Diagnostic Tool |
| Inspect Wiring and Connections | Visually inspect the wiring and connections associated with the Phase W current sensor for signs of damage, loose connections, or corrosion. | Flashlight, Multimeter |
| Test Auxiliary Transmission Fluid Pump Motor | Use a diagnostic tool to test the functionality of the auxiliary transmission fluid pump motor to ensure it is operating correctly. If the motor shows signs of failure, it may need repair or replacement. | Diagnostic Tool, Multimeter |
| Repair or Replace Components | Repair or replace any faulty components, including the Phase W current sensor, wiring, or the motor itself, to restore proper function. | Repair Tools, Replacement Parts |
| Clear the Code and Test Drive | After repairs are completed, clear the fault code using an OBD-II scanner and perform a test drive to ensure the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | Re-scan the vehicle after the test drive to confirm that the P0B06 code does not return. | OBD-II Scanner |
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