P0418 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired by…
Category: Buick
P0418 Buick Secondary Air Injection System Relay A Circuit Malfunction
P0419 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired by…
P0419 Buick Secondary Air Injection System Relay B Circuit Malfunction
P041A Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit OBD Code: System: Subsystem: P041A Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit Location: Analysis: Possible Causes: Sensor B Circuit Issue Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar…
P041A Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit
P041B Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit Range / Performance OBD Code: System: Subsystem: P041B Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit Range / Performance Location: Analysis: Possible Causes: Sensor B Out of Expected Range Tech description: Buick Vehicle:Buick Regal –…
P0412 Buick Secondary Air Injection Switchover Solenoid Circuit
P0413 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired…
P0413 Buick Secondary Air Injection System Switching Valve A Circuit Open
P0414 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired…
P0414 Buick Secondary Air Injection System Switching Valve A Circuit Shorted
P0415 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired…
P0415 Buick Secondary Air Injection System Switching Valve B Circuit Malfunction
P0416 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired…
P0416 Buick Secondary Air Injection System Switching Valve B Circuit Open
P0417 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired…
P040D Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit High
P040E Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Intermittent / Erratic OBD Code: System: Subsystem: P040E Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Intermittent / Erratic Location: Analysis: Possible Causes: Sensor A Periodically Unstable Circuit Tech description: Buick Vehicle:Buick Regal – ?Buick…
P040E Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Intermittent / Erratic
P040F Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A / B) Correlation OBD Code: System: Subsystem: P040F Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor A / B) Correlation Location: Analysis: Possible Causes: Sensor A / B Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera –…
P040F Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A / B) Correlation
P0410 Buick 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…
P0410 Buick Secondary Air Injection System Malfunction
P0411 Buick 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…
P0411 Buick Secondary Air Injection System Insufficient Flow
P0412 Buick 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 Buick is detected the the AIR vacuum control solenoid circuit not operating as desired by the PCM….
P0408 Buick Exhaust Gas Recirculation Sensor B Circuit High
P0409 Buick Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction OBD Code: System: Subsystem: P0409 Buick – (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: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar…
P0409 Buick Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction
P040A Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit OBD Code: System: Subsystem: P040A Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Location: Analysis: Possible Causes: Sensor A Circuit Issue Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar…
P040A Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit
P040B Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Range / Performance OBD Code: System: Subsystem: P040B Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Range / Performance Location: Analysis: Possible Causes: Sensor A Out of Expected Range Tech description: Buick Vehicle:Buick Regal –…
P040B Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Range / Performance
P040C Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Low OBD Code: System: Subsystem: P040C Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Low Location: Analysis: Possible Causes: Sensor A End of Range – Circuit Lower Than Expected Tech description: Buick Vehicle:Buick Regal –…
P040C Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit Low
P040D Buick Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit High OBD Code: System: Subsystem: P040D Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor A) Circuit High Location: Analysis: Possible Causes: Sensor A End of Range – Circuit Higher Than Expected Tech description: Buick Vehicle:Buick Regal –…
P0404 Buick Exhaust Gas Recirculation Control Circuit Range/Performance
P0405 Buick Exhaust Gas Recirculation Position Sensor Circuit Low Voltage Possible causes – Faulty EGR volume control solenoid valve– EGR volume control solenoid valve harness is open or shorted– EGR volume control solenoid valve circuit poor electrical connection– EGR temperature sensor and circuit What about the obd code? An improper voltage signal is sent to…