P1622 – Land Rover DTC

Land Rover DTC P1622 – Repeated Wrong ECM Security Code Fault

DTC P1622 meaning on Land Rover

DTC P1622: Repeated Wrong ECM Security Code Fault is a diagnostic trouble code that indicates the Engine Control Module (ECM) has detected repeated incorrect security codes being entered.

Land Rover DTC P1622 symptoms

• Check Engine Light (CEL) illuminated
• Engine may not start
• Vehicle may go into a reduced power mode

Land Rover DTC P1622 causes

• Incorrect security code entered multiple times
• Faulty ECM
• Issues with the immobilizer system

Land Rover DTC P1622 seriousness

The seriousness of DTC P1622 lies in the potential for the vehicle not starting or going into a reduced power mode, which can affect the drivability and safety of the vehicle.

How to diagnose DTC P1622 on Land Rover

1. Use a diagnostic scanner to retrieve the fault codes
2. Check for any other related fault codes
3. Inspect the security code input process
4. Test the ECM and immobilizer system for faults

How to fix DTC P1622 on Land Rover

1. Ensure the correct security code is being entered
2. If the security code is correct, check for faults in the ECM and immobilizer system
3. Repair or replace any faulty components
4. Clear the fault codes and test the vehicle

How to erase DTC P1622 on Land Rover

1. Use a diagnostic scanner to clear the fault codes
2. Ensure the issue causing the fault code has been resolved
3. Perform a test drive to confirm the repair