DTC B1129 [Advanced Keyless System] Reference: Notes

DTC B1129 POSSIBLE CAUSE TABLE

DTC B1129	Keyless antenna (interior, middle)
DETECTION CONDITION	Keyless antenna dose not operated.
POSSIBLE CAUSE	Keyless antenna (interior, middle) malfunction Open or short circuit in wiring harness between keyless control module and keyless antenna Keyless control module malfunction
Courtesy of MAZDA MOTORS CORP.