B0120

Fluid Reservoir Level Sensor E

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$11–56 (est.)

Symptoms

Check engine light is on
False fluid level readings
No low fluid warnings

Causes

Open or short circuit in the sensor circuit
Sensor contamination
Mechanical damage to the float
Tank failure
Wiring Harness Problems

How to Fix

Check the fluid level in the corresponding reservoir
Visually inspect the sensor and circuit for damage
Check sensor resistance
Clean or replace sensor if necessary
Check the integrity of the wiring harness

Related codes

B0115 B0116 B0117 B0118 B0119