B011C: Fluid Reservoir Level Sensor A

Fault on fluid reservoir level sensor A. Tracks fluid level in a wash, brake or coolant reservoir.

Low severity. Can I keep driving?You can normally keep driving. If it affects the lights or visibility, get it repaired before driving at night or in the rain.

Symptoms

Warning light or symbol related to the affected system
Comfort or safety function impaired

Most likely causes

Float or sensor failed

What to check, in order

Start with the simplest. You can tick off each step.

Check the fuses and relays
Read the codes with a multi-system scanner
Check the connectors and wiring
Test the component from the scanner if it allows this

Good to know

Repair difficulty: easy

What each character of B011C means

B: Body
0: Generic code: same on every make
1: Subsystem depends on the code range
1C: Specific fault in that system

Frequently asked questions

Can I keep driving with code B011C?

You can normally keep driving. If it affects the lights or visibility, get it repaired before driving at night or in the rain.

What causes code B011C?

The most common causes are: float or sensor failed.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.