P0B88
Hybrid/EV Battery Voltage Sense P Circuit Low
What it means
P0B88 means Hybrid/EV Battery Voltage Sense P Circuit Low.
Check these first
- A P circuit tap reading below the surrounding cell voltages
- High resistance in the P sense lead or connection
- A corroded pin in the P circuit connector
- A weak cell at the P voltage tap
- A sense module input fault on the P channel
What to do next
- Read the P circuit voltage on a scan tool
- Compare the P tap reading to its neighbors
- Inspect the P sense lead and connector for corrosion
- Measure resistance through the P circuit
- Replace the sense module if the P channel reads low
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.