P1199moderate severityPowertrain
Radiator Temperature Sensor Circuit Low
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
The radiator temperature sensor signal voltage is too low, often a short to ground. No direct generic OBD equivalent.
Symptoms
- Check engine light on
- Cooling fan runs constantly
- Inaccurate temp reading
Common causes
- Shorted radiator temp sensor
- Wiring shorted to ground
- Corroded connector
- Faulty PCM
Diagnostic steps
- Scan for stored codes
- Check sensor signal voltage
- Inspect wiring for short to ground
- Test sensor resistance
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P0003
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P0004
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P0010
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P0011
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P0012
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P0013
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P0014
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P0015
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