Possible causes – Air Injection Pump Relay harness is open or shorted– Air Injection Pump Relay circuit poor electrical connection– Faulty Air Injection Pump Relay Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Tag: VOLKSWAGEN
P0423 VOLKSWAGEN Heated Catalyst Efficiency Below Threshold Bank 1
Possible causes – Air leak before catalytic converter – Faulty oxygen sensor– Faulty Catalytic Converter Tech description As the code description implies the P0423 code means that the vehicle’s control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2)…
P0424 VOLKSWAGEN Heated Catalyst Temperature Below Threshold Bank 1
Possible causes – Air leak before catalytic converter – Faulty oxygen sensor– Faulty Catalytic Converter Tech description As the code description implies the P0424 code means that the vehicle’s control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2)…