B1676 Battery Pack Voltage Out of Range
What does B1676 mean on a Ford?
B1676 — Battery Pack Voltage Out of Range. This Ford-enhanced code applies to Escape Hybrid and other Ford hybrids (high-voltage battery pack).
Common causes of B1676
- Degraded high-voltage battery pack
- Failing battery pack voltage sense circuit
- Corroded high-voltage service plug connections
- Weak 12V auxiliary battery skewing measurements
- Battery control module fault
How to fix B1676
- Read pack voltage and block voltages with a hybrid-capable scanner
- Service the 12V auxiliary battery first — it corrupts pack readings
- Inspect high-voltage connections with proper safety procedures
- Compare block voltages to find weak blocks
- Service the pack after confirming with block data (high voltage — trained technicians only)