The P0B97: Hybrid Battery Voltage Sense “S” Circuit Low refers to a condition where the voltage sense circuit “S” in the hybrid battery system is detecting a lower-than-expected voltage. This can result from a faulty sensor, wiring issues, or an electrical fault in the system.
P0B97 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0B97: Hybrid Battery Voltage Sense “S” Circuit Low |
| Is it serious? | Yes, as low voltage readings can negatively impact the hybrid system’s battery management and vehicle performance. |
| Possible causes | – Low voltage reading from sense S – Faulty sensor – Electrical issue |
| How to diagnose? | – Measure voltage sense S reading – Test sensor functionality – Inspect electrical system |
P0B97 Meaning
The P0B97 code indicates that the hybrid battery voltage sense circuit “S” is registering a voltage that is lower than the expected range. This can lead to improper management of the hybrid battery, affecting the vehicle’s overall performance. The low voltage reading could be caused by a malfunctioning sensor, damaged wiring, or an electrical problem within the circuit.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional fault codes that might provide more insight into the problem. | OBD-II Scanner |
| Measure Voltage Sense S Reading | Use a multimeter or diagnostic tool to measure the voltage from sense S and compare it with manufacturer specifications. | Multimeter, Diagnostic Tool |
| Inspect Voltage Sensor S | Visually inspect the voltage sensor for signs of damage, malfunction, or loose connections that could cause low voltage readings. | Flashlight, Safety Gloves |
| Test Sensor Functionality | Use a diagnostic tool to test the voltage sensor S and ensure it is providing accurate readings. Compare with manufacturer specifications. | Diagnostic Tool |
| Inspect Electrical System | Check the wiring, connectors, and electrical components related to sense S for any shorts, corrosion, or damage. Repair or replace as necessary. | Flashlight, Multimeter |
| Clear the Code and Test Drive | After completing repairs, clear the fault code and take the vehicle for a test drive to verify the issue has been resolved. | OBD-II Scanner, Vehicle Manual |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure that the P0B97 code has not returned. | OBD-II Scanner |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
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)