DTC B1D34-66: Heater In Lock Out Mode - Signal has too many transitions/events: Action

WARNING: This page is about a different car, the 2018 Land Rover Discovery and 2017 Land Rover Discovery. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

This DTC is set when no flame is detected, even after re-start attempt.
If other fuel fired booster heater related DTCs are also set, perform the relevant corrective actions for those DTCs first and retest.
After repairing the fuel fired booster heater fuel pipe, perform routine - Fuel Priming (0x9009).

Check the fuel fired booster heater fuel pipe for restrictions and leaks. Rectify as necessary
Check the fuel fired booster heater exhaust for restrictions. Rectify as necessary
Using the Jaguar Land Rover Approved Diagnostic Equipment, clear the DTCs and retest. If the fault persists, install a new fuel fired booster heater as necessary