P0187
PowertrainTemperature Sensorlow severityFuel Temperature Sensor B Circuit Low
What P0187 Means
The second fuel temperature sensor is reporting an abnormally low voltage. This usually points to a short to ground or a failed sensor.
Symptoms
- Check engine light on
- Rich or lean running
- Poor fuel economy
Common Causes
- Short to ground in wiring
- Failed fuel temperature sensor B
- Corroded connector
- Faulty PCM
Diagnostic Steps
- Read trouble codes
- Check signal voltage at sensor
- Inspect wiring for short to ground
- Replace sensor if faulty
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ANCEL AD410 →
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Serious DIY~$100
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✓ Autel official store
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