Hybrid Battery Voltage Sense Circuit Low
The P0B97 code indicates that the hybrid battery voltage sense circuit is reading a voltage lower than expected. This circuit monitors the voltage of the hybrid battery pack. A low voltage reading can be caused by a faulty battery voltage sensor, wiring issues, or a weak hybrid battery. This condition may affect hybrid system operation and fuel economy.
01. Most Common Causes
- Faulty hybrid battery voltage sensor
- Open or shorted wiring in the voltage sense circuit
- Corroded or loose connectors
- Weak or failing hybrid battery pack
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- Hybrid system warning light on
- Possible loss of hybrid assist
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve all codes and freeze frame data.
Step 2: Inspect the hybrid battery voltage sensor and wiring for damage, corrosion, or loose connections.
Step 3: Test the voltage sensor circuit with a multimeter to check for proper voltage and continuity.
Step 4: If wiring is okay, replace the hybrid battery voltage sensor.
Step 5: If the sensor is not the issue, test the hybrid battery pack for weak cells or low voltage.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it may indicate a failing hybrid battery or sensor, which could lead to reduced performance or unexpected shutdown.
How much does it cost to fix?▼
The cost to diagnose and repair a P0B97 code typically ranges from $50 to $150 for sensor replacement, but could be higher if the hybrid battery needs replacement.