If the key and receiver look fine, the fault (-11) may be a circuit fault (Open or Short).

: Professional diagnostics using JLR approved equipment (like Pathfinder or TOPIx) can confirm if a replacement module is needed. 3. Professional Help

A failure inside the amplifier's internal printed circuit board (PCB) can trigger this fault. An integrated resistor or silicon chip handling the engine speed input circuit can fail short internally, mimicking an external wiring harness defect. Symptoms to Watch For

Before digging into wiring, rule out the key fob itself.