The P0AF5: Drive Motor Inverter Temperature Sensor “B” Circuit High fault code indicates that the voltage in the drive motor inverter temperature sensor “B” circuit is higher than expected. This may be caused by a faulty sensor, control module issues, or wiring problems, potentially leading to inaccurate temperature readings and affecting the performance of the drive motor inverter system.
P0AF5 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0AF5: Drive Motor Inverter Temperature Sensor “B” Circuit High |
| Is it serious? | Yes, high voltage can lead to incorrect temperature readings, resulting in overheating or performance issues in the inverter system. |
| Possible causes | – High voltage in drive motor inverter temperature sensor “B” circuit – Faulty sensor or control module – Wiring issue |
| How to diagnose? | – Measure voltage in drive motor inverter temperature sensor “B” circuit – Test sensor and control module functionality – Inspect wiring for faults |
P0AF5 Meaning
The P0AF5: Drive Motor Inverter Temperature Sensor “B” Circuit High fault code signals that the voltage in the circuit related to temperature sensor “B” is above the expected range. This can occur due to a defective temperature sensor, control module malfunction, or wiring issues, which may lead to improper thermal management of the drive motor inverter.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional related codes that might give more insight into the issue. | OBD-II Scanner |
| Measure Voltage in Circuit | Use a multimeter to measure the voltage in the drive motor inverter temperature sensor “B” circuit and compare it with the manufacturer’s specifications. | Multimeter, Vehicle Service Manual |
| Test Sensor and Control Module | Test the functionality of temperature sensor “B” and the control module to ensure they are working within their proper voltage ranges. | Multimeter, Diagnostic Tool |
| Inspect Wiring for Faults | Visually inspect the wiring and connections for signs of damage, loose connections, or corrosion that could be causing the high voltage issue. | Flashlight, Multimeter |
| Repair or Replace Components | If necessary, repair or replace faulty wiring, the temperature sensor, or the control module to restore proper voltage levels. | Repair Tools, Replacement Parts |
| Clear the Code and Test Drive | After repairs, 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 P0AF5 code does not return. | OBD-II Scanner |
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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)