Possible causes – Weak battery – Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Tag: MAZDA
P0690 MAZDA Electronic Control Module Power Relay Sense Circuit High
Possible causes – Weak battery – Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
P0219 MAZDA Engine Overspeed Condition
Possible causes – Wheel slippage (water, ice, mud, and snow)– Excessive engine RPM in NEUTRAL or operated in the wrong transmission gear.– Engine over-rev condition– Faulty Crankshaft position sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0219 MAZDA OBD Code Description Indicates the vehicle has been operated in a manner which…
P1128 MAZDA HO2S Heater O2 Sensor Too Cool Before KOER Test
Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
P0297 MAZDA Engine RPM/Vehicle speed limiter
Possible causes – Vehicle driven at a high rate of speed– Wheel slippage due to water or ice– Engine over-rev condition– Vehicle over speed condition Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0297 MAZDA OBD Code Description Indicates the vehicle has been operated in a manner which caused the vehicle speed…
P0421 MAZDA Warm Up Catalyst System Right Efficiency Below Threshold
Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech description As the code description implies the P0421 code means that the vehicle’s control module has detected…
P0431 MAZDA Warm Up Catalyst System LH Efficiency Below Threshold
Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech description As the code description implies the P0431 code means that the vehicle’s control module has detected…
P0234 MAZDA Turbo/Supercharger Overboost Condition
Possible causes – Wastegate control solenoid valve damaged– Vacuum hose loose or damaged– Wastegate control solenoid valve damaged Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0234 MAZDA OBD Code Description The boost pressure sensor responds to pressure changes in the intake manifold. This pressure is created by the turbocharger and changes…
P0510 MAZDA Closed Throttle Position Switch
Possible causes – Throttle Position Switch (TPS) Adjustment– Faulty Throttle Position Switch (TPS)– Throttle Position Switch (TPS) harness open or shorted– Throttle Position Switch (TPS) circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine idle problems– Possible hard to start– Possible shifting problems
P1131 MAZDA Lack of Upstream Heated Oxygen Sensor Switch – Sensor Indicates Lean – Bank 1
Possible causes – Vacuum leak affecting bank 1 only– Fuel injector problem bank 1– Check for cylinder misfire on bank 1– Engine mechanical condition– Faulty O2 sensor. Tech description Though the Oxygen (O2) sensor, the Engine Control Module (ECM) has detected a lean system, which means that there is either not enough fuel or and…