Engine-Codes - Generic - P00B3

P00B3 Code - Radiator Coolant Temperature Sensor Circuit Low Voltage

- Code Popularity: 13,469 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P00B3?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Radiator Coolant Temperature (RCT) Sensor
  • Radiator Coolant Temperature Sensor harness is open or shorted
  • Radiator Coolant Temperature Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

Code Tech Notes





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How to Fix the DTC P00B3?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P00B3 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P00B3 Code Mean?

The Radiator Coolant Temperature (RCT) sensor is a variable resistor that measures the temperature of the engine coolant in the radiator. This diagnostic checks for an open, short to ground, or an intermittent circuit condition between the Engine Control Module (ECM) and RCT sensor. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the RCT sensor is warmer than 149°C (300°F) for greater than 10 s.

P00B3 Code - Radiator Coolant Temperature Sensor Circuit Low Voltage

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Code P00B3 Information for Specific Makes

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