Home / Brands / Land Rover / P1623
OBD-II Code Land Rover

P1623 — Land Rover — ECM Security Code Fault

The ECM reports an invalid or missing security code required to authorize engine starting.

Brand Land Rover
System Immobilizer System
Severity High
Safe to drive? Not recommended
Advanced scanner Yes

What does code P1623 mean on Land Rover vehicles?

The ECM reports an invalid or missing security code required to authorize engine starting.

Common symptoms

  • No start
  • immobilizer warning active

Possible causes

  • Immobilizer system fault
  • key transponder issue

Initial recommendation

Relearn immobilizer and reprogram keys to ECM.

Safety notice

This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.

Analyze this code with MecaOBD

Use the app to combine Land Rover code P1623 with your vehicle's actual symptoms for more complete diagnostic guidance.

Go to the app View more brands