Mazda BT-50 P0134: O2 Sensor → No Activity Detected B1S1

P0134 is a relatively common OBDII trouble code. It’s generic, which means that it has the same meaning for any vehicle with OBDII. It means that the PCM/ECM is not detecting any activity from the sensor.   P0134 Definition P0134: O2 Sensor → No Activity Detected →Bank 1 Sensor 1 The BT-50’s computer uses the … Read more

Mazda BT-50 P0403:EGR→ Circuit Malfunction

P0403 is a very common trouble code. It is a generic code, which means that it has the same meaning for the Mazda BT-50 as it would any other vehicle. It affects the EGR (Exhaust Gas Recirculation System and technically means: P0403: EGR→ Circuit Malfunction A circuit malfunction implies that there is a wiring problem … Read more

Mazda BT-50 P0402: EGR → Excessive Flow Diagnosis

P0402 is an OBDII trouble code that’ll pop up in the Mazda BT-50. It has to do with the emissions system and stands for: P0402: EGR → Excessive Flow Diagnosis The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. The amount of gas cycled … Read more

Mazda BT-50 P0404: EGR Circuit → Range/Performance

With the Mazda BT-50, P0404 is going to have the same meaning as it would in any other vehicle. It’s a generic powertrain code that stands for: P0404: EGR Circuit → Range/Performance While there are several issues that can throw the P0404 code in the BT-50, the most common issue is either going to be … Read more

Mazda BT-50 P0131: Meaning, Causes, How to Fix

The P0131 code is an OBD-II diagnostic trouble code that indicates low voltage in the Mazda BT-50’s Oxygen (O2) sensor circuit for Bank 1, Sensor 1 (B1S1). This sensor plays a crucial role in maintaining optimal engine performance by detecting the air-fuel ratio in the exhaust, then sending this data to the BT-50’s engine control … Read more