P0418 CHRYSLER Secondary Air Injection System Relay A Circuit Malfunction

Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection When is the obd code mean? The DTC P0418 is detected the the AIR vacuum control solenoid circuit not operating as desired by the PCM. Symptoms – Engine Light ON (or Service Engine…

P0073 CHRYSLER Ambient Air Temperature Sensor Circuit High

Possible causes – Faulty ambient air temperature sensor– Ambient air temperature sensor harness is open or shorted– Ambient air temperature sensor circuit poor electrical connection When is the obd code mean? Ambient temperature sensor input voltage is above the minimum acceptable value. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0073 CHRYSLER…

P0072 CHRYSLER Ambient Air Temperature Sensor Circuit Low

Possible causes – Faulty ambient air temperature sensor– Ambient air temperature sensor harness is open or shorted– Ambient air temperature sensor circuit poor electrical connection When is the obd code mean? Ambient temperature sensor input voltage is below the minimum acceptable value. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0072 CHRYSLER…

P0070 CHRYSLER Ambient Air Temperature Signal Voltage Too High/Low

Possible causes – Faulty ambient air temperature sensor– Ambient air temperature sensor harness is open or shorted– Ambient air temperature sensor circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected an open or short circuit condition on the Ambient Air Temperature (AAT) sensor circuit. Symptoms – Engine…

P0071 CHRYSLER Ambient Air Temperature Sensor Performance

Possible causes – Faulty ambient air temperature sensor– Ambient air temperature sensor harness is open or shorted– Ambient air temperature sensor circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected an open or short circuit condition on the Ambient Air Temperature (AAT) sensor circuit. Symptoms – Engine…

P1388 CHRYSLER ASD or CNG Relay Control Circuit

Possible causes – Faulty ASD Relay– Faulty CNG Relay– ASD or CNG Relay harness is open or shorted– ASD or CNG Relay circuit poor electrical connection– ASD or CNG Relay poor ground or supply voltage condition When is the obd code mean? ECM commanded on the ASD or CNG relay and detected an open or…

P0400 CHRYSLER Exhaust Gas Recirculation System Performance

Possible causes – Exhaust Gas Recirculation (EGR) volume control valve stuck closed– Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve– Faulty EGR Valve– Faulty EGR temperature sensor and circuit– Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted– Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical connection– Dead (Weak) battery Tech…

P0816 CHRYSLER Downshift Switch Circuit

Possible causes – Faulty Transmission Gear Selection Switc – Transmission Gear Selection Switch harness is open or shorted– Transmission Gear Selection Switch circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)