P00B3 - OBD II Trouble Code

Our automotive experts have put together the following information about the P00B3 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P00B3 code.

OBD II Fault Code

• OBD II P00B3

OBD-II Code Cooling fans may stay on all the time is defined as a Radiator Coolant Temperature Sensor Circuit Low

The Radiator Coolant Temperature Sensor tells the engine control module (PCM) the temperature of the coolant in the radiator. When the PCM detects an incorrect signal from the Radiator Coolant Temperature Sensor, the PCM will set code P00B3.

Cooling fans may stay on all the time Symptoms

• Cooling fans may stay on all the time

Common Problems That Trigger the P00B3 Code

• Powertrain Control Module (PCM) failure
• Radiator temperature sensor failure
• Wiring issue