Land Rover Jaguar B13c2-49 Jun 2026

Understanding and Fixing Land Rover/Jaguar DTC B13C2-49: Windshield Misting Sensor Failure

: Measures the moisture content in the cabin air near the glass.

: This is the most frequent solution. You can find detailed walkthroughs for replacing the sensor on community forums like Drive2.

The sensor is held against a bracket fixed to the windshield glass. Pull up gently on the lower edge of its mounting clip and slide the sensor down toward the dashboard to disengage it. Step 3: Disconnect the Wiring Harness land rover jaguar b13c2-49

: Your climate control unit or air conditioning compressor may overcompensate or underperform because it cannot evaluate the moisture profile inside the cabin. Principal Causes of B13C2-49

For owners of Land Rover and Jaguar vehicles, encountering a diagnostic trouble code (DTC) like can be confusing. This code, while not the most common, appears across many models, from the Range Rover Evoque to the Jaguar F-Type. This comprehensive guide explains everything about this fault, from what it means and its symptoms to step-by-step diagnostic and repair procedures.

This sensor—typically located near the rear-view mirror—monitors the humidity levels and temperature of the windshield's interior surface. When it detects conditions likely to cause fogging, the vehicle’s HVAC system automatically adjusts to prevent it, often without the driver needing to press any buttons. Key Benefits The sensor is held against a bracket fixed

Jaguar Land Rover (JLR) utilizes specific extensions on standard OBD-II trouble codes to zero in on specific hardware states:

Component Longevity: Like any electronic part, the capacitors and infrared elements within the mist sensor have a finite lifespan. Step-by-Step Troubleshooting and Repair

Sometimes a standard code clear isn't enough; the ignition may need to be cycled specifically during the reset process to "handshake" with the sensor again. Are you currently seeing this code after a windshield replacement , or did it appear spontaneously Faulty Auto Windscreen Wipers? - Jaguar F-Type Forums Principal Causes of B13C2-49 For owners of Land

49: This specific sub-fault modifier indicates an "Internal Electronic Failure."

This task is handled by the (often simply called the humidity sensor , part number LR058011 ). This small electronic unit is located on the interior side of the windshield, typically hidden inside the plastic trim cowl right behind or beneath the rearview mirror.

Gently split the plastic cover behind the rearview mirror using your trim tool.