Battery Temperature Sensor Range/Performance Problem
The battery temperature sensor is reporting an out-of-range value.
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 battery temperature sensor, which tells the car's computer how hot the battery is, is reading a temperature that's too high, too low, or just not right at all.
What the computer is actually seeing
The engine control module (ECM) expects a battery temperature range between -40°C and 85°C (-40°F to 185°F). When the sensor sends a value outside this range, the system can trigger the code.
What a healthy reading looks like
Normal operation is typically between 0°C and 60°C (32°F to 140°F). Look for readings not associated with actual temperatures.
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.
- 11. Inspect the wiring and connectors of the battery temperature sensor for corrosion, damage, or looseness. Decision: Are they intact? If No, repair or replace as needed and recheck the code.
- 22. Measure the voltage at the battery temperature sensor connector with the key on, engine off. Expected voltage is around 0.5V to 4.5V depending on temperature. Decision: Is the voltage within range? If No, replace the sensor and recheck the code.
- 33. Check the battery temperature with an infrared thermometer. Compare this reading to the one from the sensor. Decision: Are they the same? If No, replace the sensor and clear codes.
Common causes
- Faulty battery temperature sensor
- Corroded or damaged wiring to the sensor
- Loose or damaged connectors
- Faulty engine control module (rare)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means you can drive but should fix it soon to avoid potential battery issues.
Will this code come back after clearing?
If the problem isn't fixed, yes, it will likely return.
Why does this code pair with others?
Related codes often indicate similar issues or faults within the battery management system.
Working a real vehicle right now?
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