P2B20

Symptoms

• Check Engine light comes on
• Reduced performance of the hybrid system
• Overheating of electronic components
• Incorrect coolant temperature readings
• Increased fuel consumption (in hybrid models)

Causes

• Coolant temperature sensor B malfunction
• Open or short circuit in the sensor circuit
• Poor contact in sensor connectors
• Wiring harness damage
• Problems with the hybrid system control unit

How to Fix

1. Check the integrity of the coolant temperature sensor B
2. Check the condition of the sensor circuit and connectors
3. Check sensor resistance according to manufacturer specifications
4. Replace sensor if necessary
5. Check the operation of the system after repair

Related codes

Error P2B20 by Vehicle Brand