Details On DTCs

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0134:00 (PCM, SKYACTIV-G, US) DETECTION CONDITION AND POSSIBLE CAUSE

Description	A/F sensor circuit no activity detected
Detection condition	Determination conditions	The condition in which the A/F sensor element impedance is the specified value or more continues for 35 s.
	Preconditions	Battery voltage: 11-18 V^1 The following DTCs are not detected: A/F sensor heater: P0031:00 and P0032:00 A/F sensor: P0131:00 and P0132:00 ^1 : Standard can be verified by displaying PIDs using M-MDS
	Malfunction determination period	35 s period
	Drive cycle	2
	Self test type	CM DTC self test
	Sensor used	A/F sensor
Fail-safe function	Fixes duty value of A/F sensor heater Stops fuel feedback control of A/F sensor
Vehicle status when DTCs are output	Not applicable
Possible cause	A/F sensor malfunction A/F sensor connector or terminals malfunction A/F sensor related wiring harness malfunction A/F sensor incorrect installation A/F sensor deterioration PCM connector or terminals malfunction PCM malfunction