DTC U0236 [Advanced Keyless System]: Notes

WARNING: This page is about a different car, the 2007 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0236 POSSIBLE CAUSE TABLE

DTC U0236	Steering lock unit communication system.
DETECTION CONDITION	Steering lock unit communication error
POSSIBLE CAUSE	Steering lock unit malfunction Open or short circuit in wiring harness between keyless control module and steering lock unit Keyless control module malfunction
Courtesy of MAZDA MOTORS CORP.