Possible causes – 1/1 And 2/1 O2 sensors harness is open or shorted– 1/1 And 2/1 O2 sensors circuit connectors (wrong connection)– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0040 CHRYSLER
Possible causes – 1/1 And 2/1 O2 sensors harness is open or shorted– 1/1 And 2/1 O2 sensors circuit connectors (wrong connection)– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0040 DODGE
Possible causes – 1/1 And 2/1 O2 sensors harness is open or shorted– 1/1 And 2/1 O2 sensors circuit connectors (wrong connection)– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0040 JEEP
Possible causes – Bank 1 Sensor 1 / Bank 2 Sensor 1 harness is open or shorted– Bank 1 Sensor 1 / Bank 2 Sensor 1 circuit connectors (wrong connection)– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON
Possible causes – HO2 sensors harness is open or shorted– HO2 sensors circuit fuse– HO2 sensors circuit relay defective– HO2 sensors circuit connectors (wrong connection)– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon Warning
Possible causes – HO2S Bank 1 and 2 Sensor 1 harness is open or shorted– HO2S Bank 1 and 2 Sensor 1 circuit connectors (wrong connection)– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon
Possible causes – HO2S Bank 1 and 2 Sensor 1 harness is open or shorted– HO2S Bank 1 and 2 Sensor 1 circuit connectors (wrong connection)– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon
Possible causes – HO2S Bank 1 and 2 Sensor 1 harness is open or shorted– HO2S Bank 1 and 2 Sensor 1 circuit connectors (wrong connection)– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon
Possible causes – HO2S11 and HO2S21 sensors harness is open or shorted– HO2S11 and HO2S21 sensors circuit connectors (wrong connection)– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0040 BMW Description The