P01BB

Engine Oil Temperature Sensor B Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Check engine light comes on
Incorrect oil temperature readings on the dashboard

Causes

Oil temperature sensor B fault
Open or short circuit in wiring harness
Poor contact in the sensor connector
ECU malfunction

How to Fix

Check the integrity of the wiring harness and 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 P01BB returns

Related codes

P01BA P01BC P01BD