B0133: A/V Sensor Washer Fluid E Control Circuit

What it means

The control module monitors the control circuit for A/V sensor washer fluid pump E. It sets this code when the circuit’s electrical response is outside the expected range or the pump does not respond as commanded.

At a glance

• Usually lights the airbag (SRS) or body-system warning light

How it works

Pump E in the A/V sensor washer system delivers cleaning fluid to an audio/video sensor lens. The control module watches pump E’s control circuit and sets B0133 if the electrical response is outside its expected range or the pump does not respond to a command.

Common causes

Most likely first.

1. Failed washer fluid pump
2. Open or shorted pump wiring
3. Loose or corroded connector
4. Blown fuse or power supply fault
5. Blocked pump or washer-fluid passage

Symptoms

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

How to diagnose it

1. Check freeze-frame data and other washer-system codes to determine whether this is an isolated pump E fault.
2. Confirm the reservoir contains fluid, then command pump E with a scan tool if supported and check for pump operation and fluid delivery.
3. Inspect pump E’s connector and wiring for corrosion, loose or displaced pins, chafing, or fluid intrusion.
4. Test pump E’s fuse, power, ground, and control circuit according to the wiring diagram and manufacturer’s specification.
5. If the electrical checks pass, look for a blockage in pump E, its hose, or the nozzle at the A/V sensor.

Common fixes

• Fill the washer-fluid reservoir if low.
• Remove a blockage from pump E’s hose or sensor nozzle.
• Repair damaged wiring or a loose or corroded pump E connector.
• Replace a failed fuse after addressing the reason it blew.
• Replace pump E if it fails despite correct power, ground, and control.

Can I keep driving?

Driving is generally possible, but the A/V sensor cleaned by pump E may become dirty and its associated assistance feature may not work as intended. Keep the sensor clean and do not rely on that feature until the washer circuit is fixed.