P01BC

Engine Oil Temperature Sensor B Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect oil temperature readings on the dashboard
Reduced engine efficiency
Illumination of the fault warning lamp (Check Engine)

Causes

Oil temperature sensor B fault
Open or short circuit in wiring harness
Poor contact in the sensor connector
Problems with the engine control unit (ECU)

How to Fix

Check the integrity of the wiring harness and sensor connectors
Measure the resistance of oil temperature sensor B
Check the voltage in the sensor circuit
Replace oil temperature sensor B if necessary
Clear error codes and check if P01BC returns

Related codes

P01BD P0197 P0198