Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the battery's ability to measure the voltage correctly. It's like when your toy's battery meter says it's low even if the battery is full.
The vehicle's control module has detected a low voltage signal from the Hybrid/EV Battery Pack Voltage Sense B Circuit.
The P0B16 code is triggered when the Powertrain Control Module (PCM), Battery Energy Control Module, or Hybrid Powertrain Control Module detects a voltage level that is lower than the expected range in the voltage sensing circuit B of the hybrid or electric vehicle battery pack. This could be due to a wiring issue, a faulty sensor, or a problem with the battery pack itself.
• Check Engine Light is on
• Reduced fuel efficiency
• Limited power output
• Faulty voltage sensor
• Damaged wiring or connectors in the circuit
• Defective battery pack
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the P0B16 code.
• Visually inspect the wiring and connectors related to the battery pack.
• Test the voltage sensor for proper operation.
• Replace the faulty voltage sensor.
• Repair or replace damaged wiring and connectors.
• Replace the battery pack if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $1500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections.
• Ensure battery pack is serviced as per manufacturer guidelines.
• Avoid deep discharging of the battery.
Sensor Issue
• Have the vehicle inspected by a professional.
• Avoid driving the vehicle until the issue is resolved.
Battery-related issues may be covered under the manufacturer's warranty for hybrid or electric vehicles.
This code has been associated with issues in early hybrid models due to sensor degradation over time.
Moderate – Should be addressed soon to avoid potential battery damage.
Driving with this code may lead to reduced vehicle performance and efficiency.
• Vehicle in 'Ready' mode
• Battery pack at normal operating temperature
The voltage sensor is typically located within or near the hybrid/EV battery pack.
Q: Can I drive my car with a P0B16 code?
A: It's not recommended, as it may lead to reduced performance and efficiency.
Q: Will this code affect my car's battery life?
A: If not addressed, it could potentially lead to battery damage over time.
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