How to Fix B0118

🚨 Diagnostic Profile

Vehicle/Equipment Make: GENERIC

Technical Description: Camera Washer Actuator P (Fault Code Reference)

This diagnostic code indicates a malfunction within the front or rear camera washer actuator circuit. This component is responsible for triggering a small pump or solenoid that sprays washer fluid across the camera lens (commonly the backup camera, surround-view camera, or forward-facing ADAS camera) to clear debris, dirt, or road grime. A fault in this circuit typically means the module is either not receiving the correct voltage signal, has an open/short circuit, or the actuator itself has failed mechanically.

🚨 Repair Difficulty Tier

Difficulty Rating: [Intermediate]

This repair falls into the Intermediate category because while the physical component replacement is mechanically simple, verifying the fault requires a digital multimeter and often a scan tool capable of reading body control module (BCM) or ADAS module live data. Incorrect wiring diagnosis can lead to misdiagnosis of a good pump as faulty, so electrical testing knowledge is required before parts replacement.

🛠️ Resolution Steps

Step 1: Preliminary Inspection

  • Visually inspect the washer fluid reservoir to confirm adequate fluid level — low fluid is the most common false trigger for this code.
  • Check the washer fluid hose routing to the camera nozzle for kinks, cracks, disconnections, or blockages caused by dirt/debris.
  • Inspect the wiring harness connector at the actuator pump for corrosion, bent pins, or loose connections.
  • Check the relay (if equipped) associated with the camera washer system in the fuse/relay box for visible damage or a burnt smell.

Step 2: Diagnostic Verification

  • Connect a scan tool to the vehicle’s OBD-II port and navigate to the Body Control Module (BCM) or ADAS module to pull live data for the washer actuator circuit status (Active/Inactive, Voltage Reading).
  • Using the scan tool, command a bi-directional test (“Activate Camera Washer”) to see if the pump engages. Listen for the motor whirring and confirm fluid is expelled from the nozzle.
  • If the pump does not activate, use a multimeter to check for battery voltage (12V+) at the actuator connector while the test is commanded. No voltage indicates a wiring or relay fault upstream; voltage present with no pump action indicates a failed actuator motor.
  • Check ground circuit continuity at the actuator connector to rule out a poor ground condition.

Step 3: Resolution & Reset Process

  • If the actuator/pump is confirmed faulty via the voltage test, replace the washer actuator pump assembly, ensuring the correct OEM or OEM-equivalent part number is used for proper fluid pressure and flow rate.
  • If wiring was found to be damaged, repair or replace the affected harness section using heat-shrink butt connectors and proper gauge wire, then re-seal with weatherproof loom tape.
  • Clear the diagnostic trouble code (DTC) using the scan tool.
  • Perform the bi-directional “Activate Camera Washer” test again to confirm proper pump function and fluid spray pattern onto the camera lens.
  • Conduct a drive cycle or ignition cycle (per manufacturer specification) to ensure the code does not reset, confirming a successful repair.

📦 Parts, Labor, and Budget Estimates

Required Components/Software:

  • Camera washer actuator/pump assembly
  • Washer fluid hose/nozzle kit (if cracked or blocked)
  • Wiring harness repair kit (connectors, terminals, wire loom) if applicable
  • OEM-level scan tool with bi-directional control capability
  • Digital multimeter

Average Component Price: $45 – $180 USD for the actuator/pump assembly, depending on vehicle make and OEM vs. aftermarket sourcing. Wiring repair kits typically range from $15 – $40 USD.

Estimated Labor Hours: 0.5 – 1.2 hours for diagnosis and verification; an additional 0.3 – 0.8 hours for component replacement and system reset/verification, totaling approximately 0.8 – 2.0 hours of standard shop labor.