Battery Voltage Sensor Circuit Range/Performance Problem
The battery voltage sensor is reporting a voltage outside of normal range.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer monitors battery voltage to ensure it's within 12 to 14.5 volts when the engine is running. If it sees something outside this range, it triggers a fault—like if the voltage dips below 11 volts or goes above 15 volts.
What the computer is actually seeing
The Engine Control Module (ECM) checks input from the battery voltage sensor continuously. When the voltage reading is below or above a specific threshold (typically 11V min or 15V max), it sets this code.
What a healthy reading looks like
Battery voltage should be around 12.6V to 12.8V when off, and 13.5V to 14.5V when running. Use a multimeter for direct measurement.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check battery voltage with a multimeter. Is it between 12.6V to 12.8V (off) and 13.5V to 14.5V (running)? If yes, continue to step 2. If no, charge or replace the battery or test the alternator.
Common causes
- Faulty battery voltage sensor
- Wiring or connector issues
- Weak battery
- Problematic alternator
- Faulty ECM
Typical repair cost
$100 - $400
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderately severe; the vehicle may experience starting issues or electrical problems. Drive only if necessary and fix soon.
Will this code come back after clearing?
If the underlying issue isn't fixed (like a bad sensor or wiring), it likely will return.
Why do I see this code with other voltage codes?
These codes often appear together due to common electrical issues affecting the battery or charging system.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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