Battery Temperature Sensor Range/Performance Problem
Battery temperature sensor reading is out of expected range.
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What it means (plain English)
The battery temperature sensor is not giving a reading that makes sense, which can affect charging and performance.
What the computer is actually seeing
The engine control module (ECM) expects the battery temperature to be between -40°C and 85°C (-40°F to 185°F). If it sees values higher than this or outside the expected range for too long, it sets this code.
What a healthy reading looks like
Expected battery temperature readings between -40°C and 85°C (-40°F to 185°F).
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 battery wiring and connectors for damage or corrosion. If found, repair or replace as necessary. Decision: Fixed or Not Fixed?
- 22. Using a multimeter, check the voltage at the battery temperature sensor. Expected value is around 0.2 to 4.5 volts depending on the temperature. Is it within range? Decision: Yes or No?
- 33. If voltage is out of range, replace the battery temperature sensor and recheck codes. Decision: Code cleared or Not Cleared?
- 44. If the voltage is within range but the code persists, inspect the ECM for issues or update its software. Decision: Update done or Not Done?
Common causes
- Faulty battery temperature sensor
- Wiring issues or shorts in the sensor circuit
- Poor connections at the battery or sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but you may experience charging issues or battery performance problems until fixed.
Will this code come back after clearing it?
It can, especially if there are underlying issues with the sensor or wiring.
Why does this code appear with other codes?
Related codes may indicate problems in the battery management system or sensor issues.
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