P00B3

Описание

Radiator Coolant Temperature Sensor, Signal too Low

Частые симптомы

• Abnormally low radiator coolant temperature readings
• Check Engine Light
• Possible excessive cooling system activation
• Incorrect cooling fan operation
• Reduced cooling system efficiency

Возможные причины

• Short to ground in radiator temperature circuit
• Failed radiator temperature sensor
• Corroded or damaged sensor connections
• ECU reference voltage issues
• Sensor calibration error

Диагностика

1. 1. Check radiator temperature signal voltage
2. 2. Test for shorts to ground in sensor circuit
3. 3. Measure sensor resistance values
4. 4. Inspect connections for corrosion or damage
5. 5. Verify ECU reference voltage stability

Решения по ремонту

• Repair shorted sensor wiring to ground
• Replace faulty radiator temperature sensor
• Clean or replace corroded connections
• Fix ECU reference voltage if needed
• Reset cooling system temperature adaptations

Профилактика

• Protect radiator sensor wiring from moisture
• Regular cooling system electrical maintenance
• Address abnormal temperature readings immediately