P2B23
Hybrid/EV Electronics Coolant Temperature Sensor B Circuit High
P2B23 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Electronics Coolant Temperature Sensor B Circuit High. Common causes: coolant temperature sensor b malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- Check engine light comes on
- Reduced performance of the hybrid system
- Possible transition to emergency mode
- Incorrect temperature readings in diagnostic equipment
Causes
- Coolant temperature sensor B malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Corroded contacts or damaged wiring
- Problems with the hybrid system control unit
How to Fix
- Check the integrity of the sensor circuit and the condition of the connectors
- Measure sensor resistance at different temperatures
- Check reference voltage and sensor signal
- If necessary, replace coolant temperature sensor B
- Repair only from an authorized dealer
Related codes
Error P2B23 by Vehicle Brand
FAQ
What does the P2B23 code mean?
P2B23 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Electronics Coolant Temperature Sensor B Circuit High
What causes a P2B23 error code?
The most common causes of P2B23 include: Coolant temperature sensor B malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Corroded contacts or damaged wiring.
How do I fix a P2B23 diagnostic trouble code?
To fix P2B23: Check the integrity of the sensor circuit and the condition of the connectors. Measure sensor resistance at different temperatures. Check reference voltage and sensor signal. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2B23?
Do not drive — repair immediately
How much does it cost to fix P2B23?
The estimated repair cost for P2B23 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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