Category: Audi

P0420 Audi Catalyst System Efficiency Below Threshold Bank 1 Possible causes – Three way catalyst converter Bank 1– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Engine Control Module (ECM) Tech description As the code description implies the P0421 Audi code means…

P0417 Audi Secondary Air Injection System Switching Valve B Circuit Shorted Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection What about the obd code? The DTC P0417 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired…

P0418 Audi 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 What about the obd code? The DTC P0418 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired by…

P0419 Audi Secondary Air Injection System Relay B Circuit Malfunction Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection What about the obd code? The DTC P0419 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired by…

P0412 Audi Secondary Air Injection Switchover Solenoid Circuit Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection What about the obd code? The DTC P0412 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired by the PCM….

P0413 Audi Secondary Air Injection System Switching Valve A Circuit Open Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection What about the obd code? The DTC P0413 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired…

P0414 Audi Secondary Air Injection System Switching Valve A Circuit Shorted Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection What about the obd code? The DTC P0414 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired…

P0415 Audi Secondary Air Injection System Switching Valve B Circuit Malfunction Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection What about the obd code? The DTC P0415 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired…

P0416 Audi Secondary Air Injection System Switching Valve B Circuit Open Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection What about the obd code? The DTC P0416 Audi is detected the the AIR vacuum control solenoid circuit not operating as desired…

P0410 Audi Secondary Air Injection System Malfunction Possible causes – Faulty Vacuum hoses damaged– Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection– Air bypass solenoid leaking/blocked or stuck open/closed– Air diverter valve leaking/blocked or stuck open/closed What about the obd code? The secondary air…

P0411 Audi Secondary Air Injection System Insufficient Flow Possible causes – Vacuum hoses damaged or pinched– Faulty Air Pump inoperative– Faulty Air Pump harness is open or shorted– Faulty Air Pump circuit poor electrical connection What about the obd code? The AIR system does not meet the expected flow rate during testing Symptoms – Engine…

P0409 Audi Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction OBD Code: System: Subsystem:  P0409 Audi – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction Location: Analysis: Possible Causes:  Sensor A  Circuit Malfunction   Tech description: Audi Vehicle:Audi A1,Audi A3,Audi A1,Audi A3,Audi A1,Audi A3,Audi A4,Audi A5,Audi Q3,Audi A5,Audi…