Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P1B70HEV Battery Voltage Too Low diagnostic control logic
Manufacturer communications
4Original wording in English
HYUNDAI
This bulletin provides instructions for a Battery Management System (BMS) software update to optimize DTC P1B70 - HEV Battery Voltage Too Low diagnostic control logic.
KIA
TSB - BMS LOGIC IMPROVEMENT FOR DTC P1B70 - This bulletin provides the procedure to improve the logic of the Battery Management System (BMS) on some 2011-2016MY Optima Hybrid (TF HEV) vehicles, produced from February 15, 2011 through July 22, 2015, which may experience a malfunction indicator light (MIL) illumination with DTC P1…
KIA
TECH TIMES: VOLUME 17, ISSUE 3 1 Kia Diagnostic System (KDS) Introduction 3 New Kia University Courses and Tests 3 K900 and Cadenza Elite Plus Certification 4 DTC P0456 and Charcoal Canister Leaks 4 Continuously Variable Valve Timing Overview 5 Crossword Puzzle 6 Diagnosing Sirius Traffic Issues 7 GDI Injector Spray Tip Deposits…
KIA
PIT STOP: DTC P1B70/P1B74/ P1B96 - HIGH VOLTAGE BATTERY SENSOR CIRCUIT FAULT - When addressing a customer complaint related to a battery warning lamp illuminated in the dash and drivability issues, access GDS to check for any active DTC(s). Also, review the BMS > Current Data to inspect for one or more HEV battery cells showing …
Check vehicle applicability
12A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Hyundai | SONATA HYBRID ↗ | 2015 |
| Hyundai | SONATA HYBRID ↗ | 2014 |
| Hyundai | SONATA HYBRID ↗ | 2013 |
| Hyundai | SONATA HYBRID ↗ | 2012 |
| Hyundai | SONATA HYBRID ↗ | 2011 |
| Kia | KIA ↗ | Year unknown |
| Kia | OPTIMA HYBRID ↗ | 2016 |
| Kia | OPTIMA HYBRID ↗ | 2015 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.