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Code B0133

Quick reference

B0133 at a glance

Plain-language meaning
This code means there's a problem with the part of the car that checks if there's enough washer fluid to clean the windshield. It's like when your toy stops working because the battery is not connected properly.
Urgency
Low – This issue does not affect vehicle performance but should be addressed to ensure proper windshield cleaning.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
Multimeter, OBD-II scanner, Screwdriver set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with the part of the car that checks if there's enough washer fluid to clean the windshield. It's like when your toy stops working because the battery is not connected properly.

Explanation

The B0133 code indicates an issue with the control circuit responsible for monitoring the washer fluid sensor, which detects the fluid level in the reservoir.

Technical description

The B0133 code is triggered when the vehicle's control module detects a malfunction in the circuit that monitors the washer fluid level sensor. This sensor ensures there is enough washer fluid available for the windshield wipers to clean the windshield effectively.

Symptoms

• Washer fluid warning light on the dashboard

• Inaccurate washer fluid level readings

• Windshield washer system not functioning properly

Common Causes

• Faulty washer fluid level sensor

• Damaged or corroded wiring or connectors

• Malfunctioning control module

Glossary

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Circuit: A closed path through which an electric current flows or may flow.

Diagnosis steps

• Check the washer fluid level sensor for damage.

• Inspect the wiring and connectors for corrosion or damage.

• Test the control module for proper operation.

Repair procedures

• Replace the faulty washer fluid level sensor.

• Repair or replace damaged wiring or connectors.

• Reprogram or replace the control module if necessary.

Tools required

• Multimeter

• OBD-II scanner

• Screwdriver set

Estimated repair cost

$50 - $200

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford F-150

Preventive measures

• Regularly check washer fluid levels.

• Inspect wiring for signs of wear.

• Ensure connectors are free of corrosion.

Error code type

Sensor Issue

User experience recommendations

• Check the washer fluid regularly.

• Have the vehicle inspected if the warning light appears.

• Avoid using the washer system excessively when fluid is low.

Warranty information

Check with the vehicle manufacturer for warranty coverage on sensors and related components.

Historical data

The B0133 code has been associated with vehicles that have frequent washer fluid sensor issues due to environmental factors like humidity and temperature changes.

Urgency level

Low – This issue does not affect vehicle performance but should be addressed to ensure proper windshield cleaning.

Testing conditions

• Vehicle in park with ignition on

• Washer fluid reservoir filled

Component location

The washer fluid level sensor is typically located in the washer fluid reservoir, which is usually found under the hood near the windshield.

FAQs

Q: What happens if I ignore the B0133 code?
A: Ignoring the code may lead to an inability to clean the windshield properly, affecting visibility.

Q: Can I fix the B0133 code myself?
A: If you are comfortable with basic car maintenance, you may be able to inspect and replace the sensor or wiring. Otherwise, seek professional help.

Optional diagnostic gear

Tools that may help diagnose B0133

FOXWELL Multi-System Scanner diagnostic tool illustration

Pro · Four-system diagnostics

FOXWELL Multi-System Scanner

A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.

Body and airbag faults often need a scanner that can access more than generic powertrain codes.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking power, ground, and continuity in body-system circuits.

View on Amazon
Bussmann Fuse Assortment diagnostic tool illustration

Universal · Fuse kit

Bussmann Fuse Assortment

Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.

Useful when body electrical faults trace back to blown fuses or shared circuits.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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