P1B25 on Hyundai
High-voltage battery path fault
Severity: Inspect soon
This is a high-voltage hybrid system fault, and the owner we read described losing drive in traffic and being towed, so treat it as a shop visit rather than a drive-and-see code.
It gets more serious if:
- Stop: Stop driving and have the car towed if the hybrid warning light is on together with loss of drive, a no-start, or the car coasting to a stop.
This page covers only what differs on Hyundai. For what P1B25 means, the ranked causes and the test order, see the P1B25 guide.
What's different on Hyundai
HyundaiYour car
2014 · Sonata
Supported by vehicle dataA 2014 Sonata Hybrid complaint quotes a dealer invoice with P1B25 and P1B77 and a faulty power relay assembly and safety plug assembly.
Sources and review
- NHTSA complaint ODI 11546978: 2014 Hyundai Sonata Hybrid, codes P1B25 and P1B77
- P1B25 High Voltage Battery Path Fault (Hyundai)
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
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