P2BDB

Motor Electronics Coolant Temperature Sensor B Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–33 (est.)

Symptoms

Incorrect temperature readings on the dashboard
Increased fuel consumption
Problems starting the engine
Unstable engine operation
Turning on the check engine light

Causes

Open circuit in the coolant temperature sensor circuit
Coolant temperature sensor malfunction
Poor connection or corrosion in connectors
Wiring harness damage
Engine control module (ECM) malfunction

How to Fix

Check the connections and connectors of the temperature sensor
Check the continuity of the sensor circuit using a multimeter
Check the resistance of the temperature sensor at different temperatures
Replace the coolant temperature sensor if necessary
Check and replace wiring harness if necessary

Related codes

P0117 P0118 P0125