The P0B93: Hybrid Battery Voltage Sense “R” Circuit High refers to a problem where the voltage sense circuit “R” in the hybrid battery system is detecting a higher-than-expected voltage. This could be caused by a faulty sensor, wiring issues, or an electrical problem affecting the circuit’s accuracy in reading voltage levels.
P0B93 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0B93: Hybrid Battery Voltage Sense “R” Circuit High |
| Is it serious? | Yes, as high voltage readings can disrupt the hybrid system’s battery management and affect overall vehicle performance. |
| Possible causes | – High voltage reading from sense R – Faulty sensor – Electrical issue |
| How to diagnose? | – Measure voltage sense R reading – Test sensor functionality – Inspect electrical system |
P0B93 Meaning
The P0B93 code indicates that the hybrid battery voltage sense circuit “R” is registering a higher voltage than the expected range. This issue can interfere with the hybrid battery’s proper management and impact the performance of the vehicle. High voltage readings may stem from a malfunctioning sensor, electrical faults, or wiring issues.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional codes that may offer further insight into the issue. | OBD-II Scanner |
| Measure Voltage Sense R Reading | Use a multimeter or diagnostic tool to measure the voltage from sense “R” and compare it to manufacturer specifications. | Multimeter, Diagnostic Tool |
| Inspect Voltage Sensor R | Visually inspect the voltage sensor for any signs of damage, malfunction, or wear that could cause incorrect high voltage readings. | Flashlight, Safety Gloves |
| Test Sensor Functionality | Use a diagnostic tool to test the sensor and ensure it is providing accurate readings. Compare the results with the manufacturer’s specifications. | Diagnostic Tool |
| Inspect Electrical System | Check the wiring, connectors, and electrical components for any signs of shorts, corrosion, or damage that may cause high voltage readings. Repair or replace as needed. | Flashlight, Multimeter |
| Clear the Code and Test Drive | After completing repairs, clear the fault code and take the vehicle for a test drive to ensure the issue has been resolved. | OBD-II Scanner, Vehicle Manual |
| Recheck for Codes | After the test drive, scan the vehicle again to confirm that the P0B93 code has not returned. | OBD-II Scanner |
OBD-II scanner Buyer’s Guide
- Scanner features explained
- Different types of scanners
- Scanners for coding/odometer/ECU/checks
- Best picks + discount codes
I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko