P0514
Generic (SAE) Basic entry
Battery Temperature Sensor Circuit Range/Performance
Severity
Medium
Typical repair cost
60 – 500 EUR
System
Powertrain
What it means
P0514 is stored when the Battery Temperature signal is electrically valid but does not make sense compared with other sensors or the expected operating range. The circuit is usually fine; the component or what it measures is out of specification.
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Symptoms
- Check engine light on
- Idle too high, too low or hunting
- Stalling when coming to a stop
- Speedometer or cruise control not working in some cases
Common causes
- Battery Temperature worn, contaminated or out of calibration
- Mechanical problem in the system the sensor measures
- Air, vacuum or exhaust leak influencing the reading
- Wrong or low-quality replacement part
- Wiring resistance causing a small voltage offset
How to diagnose
- Compare the live Battery Temperature reading with a known-good value or a second sensor at idle and at 2500 rpm
- Check for air, vacuum or exhaust leaks that could skew the reading
- Inspect the component for contamination and clean it if the design allows
- Verify the part number is correct for the engine
- Replace the Battery Temperature if the reading remains out of specification
Frequently asked questions
Can I keep driving with P0514?
Usually yes for a short time, but expect reduced performance or higher fuel use. Have it diagnosed within a few days.
Will clearing P0514 fix it?
No. Clearing only erases the stored code; it returns as soon as the monitor runs again unless the cause is repaired.