P01BD

Engine Oil Temperature Sensor B Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable oil temperature readings
Check Engine Light Illuminates
Reduced engine efficiency
Increased fuel consumption

Causes

Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Oil temperature sensor B fault
Wiring harness damage
ECU malfunction (rare)

How to Fix

Check the integrity of the sensor circuit
Inspect connectors for oxidation or damage
Check the resistance of oil temperature sensor B
Replace sensor if necessary
Check the operation of the ECU (if other reasons are excluded)

Related codes

P01BC P01BE P0115