Mazda 3 P0685: Meaning, Causes, + Diagnosis

P0685 is a somewhat rare OBDII trouble code. It’s a general code, so it has the same meaning for the Mazda 3 as any other vehicle. It indicates that the circuit that provides power to the PCM is not functioning properly.  Most of the time, P0685 will cause your 3 not to start, which leaves … Read more

Mazda 3 P0661: Meaning, Causes, & Diagnosis

P0661 is a relatively rare OBD2 trouble code.  It indicates that the electrical reading coming from your Mazda 3’s intake manifold tuning valve control circuit (on the bank 1 side) is below its specified operating range. While P0661 is a generic code, so it has the same definition for all vehicles. P0661 Definition: Intake Manifold … Read more

Mazda 3 P0660: Meaning, Causes, & Diagnosis

P0660 is a somewhat common OBDII code.  It’s generic, so it has the same meaning for the Mazda 3 as it would any other vehicle made for the 1996 model year and up.   This code indicates that there is an issue with the bank 1 side of the intake manifold valve tuning control circuit. Common … Read more

Mazda 3 P0627: Meaning, Causes + Diagnosis

P0627 is a somewhat rare and generic OBD2 trouble code, which means that it has the same meaning for the Mazda 3 as it would any vehicle made for the 1996 model year and up. In the 3, P0627 is most commonly caused by a wiring issue, bad fuel pump, or defective CAN bus.  P0627 … Read more

Mazda 3 P0621: Meaning, Causes, + Diagnosis

P0621 is a generic OBD2 code, which means that it has the same meaning for the Mazda 3 as it would any other vehicle. However, it can be challenging to diagnose due to the necessity of removing the instrument cluster. OBD2 P0621 indicates an issue with the circuit that controls the generator lamp, which is … Read more

Mazda 3 P0622:  Meaning, Causes + Diagnosis

P0622 is a somewhat rare OBD2 trouble code.  It’s a general code, meaning it has the same definition for the Mazda 3 as it would any other vehicle.  This code indicates the generator field coil control circuit is malfunctioning.  It can be a challenge to diagnose. P0622 Meaning:  Generator Field F Control Circuit Malfunction “Generator … Read more

Mazda 3 P0650: Meaning, Causes & Diagnosis

P0650 is a somewhat rare OBD2 trouble code.  It is generic, meaning that it has the same definition for any vehicle, including the Toytoa 3 Your 3’s PCM will set P0650 when it detects an issue with the malfunction indicator lamp (MIL), also commonly referred to as the check engine light.   The biggest issue … Read more

Mazda 3 P0607 Code:  Meaning, Causes + Diagnosis

P0607 is a general OBD2 diagnostic code, meaning it has the same meaning for the Mazda 3 as it would any other vehicle.  It is not a very common code. P0607 is most commonly caused by a bad PCM/ECM, battery, or wiring to and from the PCM. P0607 Definition: Control Module – Performance P0607 has … Read more

Mazda 3 P2A01: B2S1 O2 Sensor – Range/Performance

P2A01 is a rare DTC trouble code.  It is a general code, which means it has the same definition for the Mazda 3 as it would any other vehicle.  P2A01 indicates that the first oxygen on the bank 2 side of the engine is sending a signal to the PCM that is outside of its … Read more

Mazda 3 P2A00:  Meaning, Diagnosis, & Causes

P2A00 is a somewhat common DTC trouble code.  It is a general code, which means it has the same definition for the Mazda 3 as it would any other vehicle.  P2A00 indicates that the Bank 1 Sensor 1 O2 sensor is operating outside of its normal voltage range. If your Mazda 3 has DTC P2A00, … Read more