Code result
P2B20
Hybrid/EV Electronics Coolant Temperature Sensor B Circuit
High severity
What it means
The vehicle hybrid control module detects a circuit fault on the coolant temperature sensor B that monitors the power electronics cooling loop.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Sensor failed
highOne of the most commonly reported causes for this code — check this first.
Wiring or connector fault
mediumA plausible cause — test and verify before replacing parts.
Related help
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