P0355 MAZDA Ignition Coil Primary Circuit Fault Cylinder 5

Possible causes – Faulty Ignition Coil 5– Ignition Coil 5 harness is open or shorted– Ignition Coil 5 circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd code mean? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a…

P1141 MAZDA HO2S12 Heater Circuit Low

Possible causes – Faulty HO2S12– HO2S12 harness is open or shorted– HO2S12 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1142 MAZDA HO2S12 Heater Circuit High

Possible causes – Faulty HO2S12– HO2S12 harness is open or shorted– HO2S12 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1506 MAZDA Idle Air Control Overspeed Error

Possible causes – Faulty Idle Air Control (IAC) valve– Idle Air Control (IAC) valve harness is open or shorted– Idle Air Control (IAC) valve circuit poor electrical connection Tech description The P1506 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect…

P0518 MAZDA Idle Air Control Circuit Intermittent

Possible causes – Faulty Idle Air Control Valve– Vacuum leak– Idle Air Control Valve harness is open or shorted– Idle Air Control Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0519 MAZDA Idle Air Control System Performance

Possible causes – Faulty Idle Air Control Valve– Vacuum leak– Idle Air Control Valve harness is open or shorted– Idle Air Control Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0051 MAZDA HO2S Heater Control Circuit Low Bank 2 Sensor 1

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 fuse– Faulty Engine Control Module (ECM) Tech description The code means…

P0057 MAZDA HO2S Heater Control Circuit Low Bank 2 Sensor 2

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse– Faulty Engine Control Module (ECM) Tech description The code…

P0058 MAZDA HO2S Heater Control Circuit High 22

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse– Faulty Engine Control Module (ECM) When is the obd…

P0053 MAZDA HO2S11 Heater Control Circuit Fault

Possible causes – Faulty Heated Oxygen Sensor Bank 1 Sensor 1– Heated Oxygen Sensor Bank 1 Sensor 1 harness is open or shorted– Heated Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection When is the obd code mean? Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control…