Possible causes – Faulty Oxygen Sensor– Vacuum leak affecting bank 1 only– Fuel injector problem bank 1– Check for cylinder misfire on bank 1– Engine mechanical condition 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…
Tag: P1131
P1131 CHRYSLER Glow Plug Control Module Internal Fault-Voltage Supply Concern
Possible causes – Faulty Glow Plug Control Module– Glow Plug Control Module harness is open or shorted– Glow Plug Control Module circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected a concern in the Glow Plug Control Module Symptoms – Engine Light ON (or Service Engine Soon…
P1131 CHEVROLET HO2S Circuit Low Variance Bank 1 Sensor 2
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 CHEVROLET OBD Code Description A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of…
P1131 CADILLAC HO2S Circuit Low Variance Bank 1 Sensor 2
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 CADILLAC OBD Code Description A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of…
P1131 BUICK HO2S Circuit Low Variance Bank 1 Sensor 2
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 BUICK OBD Code Description A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of…
P1131 BMW Oxygen Sensor Behind Catalytic Converter 2 Ageing
Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 BMW OBD Code Description O2 sensor circuit dynamic test bank 2 sensor 2
P1131 AUDI HO2S21 Inner Resistance Too Large
Possible causes – Faulty HO2S21– HO2S21 harness is open or shorted– HO2S21 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 AUDI OBD Code Description HO2S21 Heather Oxygen Sensor Bank 2 Sensor 1