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 – 1/2 And 2/2 O2 sensors harness is open or shorted– 1/2 And 2/2 O2 sensors circuit connectors (wrong connection)– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0041 DODGE

Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection When is the code detected?

Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection When is the code detected?

Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection When is the code detected?

Possible causes – Bank 1 Camshaft 1 Position Actuator circuit is open or shorted– Bank 1 Camshaft 1 Position Actuator circuit poor electrical connection– Faulty Camshaft position solenoid– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service

Possible causes – Bank 1 Camshaft 1 Position Actuator circuit is open or shorted– Bank 1 Camshaft 1 Position Actuator circuit poor electrical connection– Faulty Camshaft position solenoid– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service

Possible causes – Bank 1 Camshaft 2 Position Actuator circuit is open or shorted– Bank 1 Camshaft 2 Position Actuator circuit poor electrical connection– Faulty Camshaft position solenoid– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service

Possible causes – Bank 1 Camshaft 2 Position Actuator harness is open or shorted– Bank 1 Camshaft 2 Position Actuator circuit poor electrical connection– Faulty Camshaft position solenoid– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service

Possible causes – Battery charge– Faulty Generator– Generator harness is open or shorted– Generator circuit poor electrical connection– Engine Control Module (ECM) controlled generator– Faulty ECM Tech notes If the battery is OK then the alternator is more than likely

Possible causes – Battery defective– Loose or missing alternator drive belt– Faulty alternator– Open or short system voltage circuit Tech notes Higher than expected voltage problems are most likely caused by bad voltage regulator. The voltage regulator is part of

Possible causes – Check other service codes first– Restricted MAP hose– Faulty MAP sensor– Intake manifold fault condition Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0237 DODGE Description The ECM has detected that the Intake Air

Possible causes – Check other service codes first– Restricted MAP hose– Faulty MAP sensor– Intake manifold fault condition Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0236 DODGE Description The ECM has detected that the Intake Air

Possible causes – Damaged, missing or loosely installed fuel filler cap Tech notes Check for a loose, missing or damage fuel filler the cap. When is the code detected? EVAP control system has a very large leak such as fuel

Possible causes – Dirty Fuel Injector 1– Faulty Fuel Injector 1– Plugged Fuel Injector 1– Fuel injector 1 harness is open or shorted– Fuel injector 1 circuit poor electrical connection Tech notes Clogged or partially clogged fuel injector can cause

Possible causes – Dirty Fuel Injector 1– Faulty Fuel Injector 1– Plugged Fuel Injector 1– Fuel injector 1 harness is open or shorted– Fuel injector 1 circuit poor electrical connection Tech notes Clogged or partially clogged fuel injector can cause

Possible causes – Dirty Fuel Injector 2– Faulty Fuel Injector 2– Plugged Fuel Injector 2– Fuel injector 2 harness is open or shorted– Fuel injector 2 circuit poor electrical connection Tech notes Clogged or partially clogged fuel injector can cause

Possible causes – Dirty Fuel Injector 2– Faulty Fuel Injector 2– Plugged Fuel Injector 2– Fuel injector 2 harness is open or shorted– Fuel injector 2 circuit poor electrical connection Tech notes Clogged or partially clogged fuel injector can cause

Possible causes – Dirty Fuel Injector 3– Faulty Fuel Injector 3– Plugged Fuel Injector 3– Fuel injector 3 harness is open or shorted– Fuel injector 3 circuit poor electrical connection Tech notes Clogged or partially clogged fuel injector can cause

Possible causes – Dirty Fuel Injector 3– Faulty Fuel Injector 3– Plugged Fuel Injector 3– Fuel injector 3 harness is open or shorted– Fuel injector 3 circuit poor electrical connection Tech notes Clogged or partially clogged fuel injector can cause