P0485 Buick Cooling Fan Power/Ground Circuit Malfunction Possible causes – Faulty fan control relay– Faulty cooling fan– Fan control relay harness is open or shorted– Fan control relay circuit poor electrical connection– Fan cooling fan harness is open or shorted– Fan cooling fan circuit poor electrical connection What about the obd code? The P0485 Buick…
Category: Buick
P0485 Buick Cooling Fan Power/Ground Circuit Malfunction
P0486 Buick Exhaust Gas Recirculation Sensor B Circuit Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0486 Buick Description Exhaust Gas Recirculation (EGR) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue…
P047C Buick Exhaust Pressure (Sensor B) Circuit Low
P047D Buick Exhaust Pressure (Sensor B) Circuit High OBD Code: System: Subsystem: P047D Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Pressure (Sensor B) Circuit High Location: Analysis: Possible Causes: Sensor B End of Range – Circuit Higher Than Expected Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…
P047D Buick Exhaust Pressure (Sensor B) Circuit High
P047E Buick Exhaust Pressure (Sensor B) Circuit Intermittent / Erratic OBD Code: System: Subsystem: P047E Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Pressure (Sensor B) Circuit Intermittent / Erratic Location: Analysis: Possible Causes: Sensor B Periodically Unstable Circuit Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David…
P047E Buick Exhaust Pressure (Sensor B) Circuit Intermittent / Erratic
P0480 Buick Cooling Fan 1 Control Circuit Malfunction Possible causes – Faulty fan control relay– Fan control relay harness is open or shorted– Fan control relay circuit poor electrical connection– Faulty cooling fan 1– Fan cooling fan harness is open or shorted– Fan cooling fan circuit poor electrical connection What about the obd code? The…
P0480 Buick Cooling Fan 1 Control Circuit Malfunction
P0481 Buick Cooling Fan 2 Control Circuit Possible causes – Faulty fan control relay– Faulty cooling fan 2– Fan control relay harness is open or shorted– Fan control relay circuit poor electrical connection– Fan cooling fan harness is open or shorted– Fan cooling fan circuit poor electrical connection What about the obd code? The P0481…
P0481 Buick Cooling Fan 2 Control Circuit
P0483 Buick Cooling Fan Rationality Check Malfunction Possible causes – Faulty fan control relay– Faulty cooling fan– Fan control relay harness is open or shorted– Fan control relay circuit poor electrical connection– Fan cooling fan harness is open or shorted– Fan cooling fan circuit poor electrical connection What about the obd code? The P0483 Buick…
P0477 Buick Exhaust Pressure Control Valve Low
P0478 Buick Exhaust Pressure Control Valve High Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to…
P0478 Buick Exhaust Pressure Control Valve High
P0479 Buick Exhaust Pressure Control Valve Intermittent Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to…
P0479 Buick Exhaust Pressure Control Valve Intermittent
P047A Buick Exhaust Pressure (Sensor B) Circuit OBD Code: System: Subsystem: P047A Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Pressure (Sensor B) Circuit Location: Analysis: Possible Causes: Sensor B Circuit Issue Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick…
P047A Buick Exhaust Pressure (Sensor B) Circuit
P047B Buick Exhaust Pressure (Sensor B) Circuit Range / Performance OBD Code: System: Subsystem: P047B Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Pressure (Sensor B) Circuit Range / Performance Location: Analysis: Possible Causes: Sensor B Out of Expected Range Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…
P047B Buick Exhaust Pressure (Sensor B) Circuit Range / Performance
P047C Buick Exhaust Pressure (Sensor B) Circuit Low OBD Code: System: Subsystem: P047C Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Pressure (Sensor B) Circuit Low Location: Analysis: Possible Causes: Sensor B End of Range – Circuit Lower Than Expected Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…
P0474 Buick Exhaust Pressure Sensor Intermittent
P0475 Buick Exhaust Pressure Control Valve Malfunction Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to…
P0475 Buick Exhaust Pressure Control Valve Malfunction
P0476 Buick Exhaust Pressure Control Valve Range/Performance Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to…
P0476 Buick Exhaust Pressure Control Valve Range/Performance
P0477 Buick Exhaust Pressure Control Valve Low Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to…
P0473 Buick Exhaust Pressure Sensor High
P0474 Buick Exhaust Pressure Sensor Intermittent Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection Tech description Replacing the exhaust back pressure usually takes care of the problem What about the obd code? An Exhaust Back Pressure (EBP) signal…
P0468 Buick Purge Flow Sensor Circuit High Input
P0469 Buick Purge Flow Sensor Circuit Intermittent Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0469 Buick Information for specific makes Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick…
P0469 Buick Purge Flow Sensor Circuit Intermittent
P0470 Buick Exhaust Pressure Sensor Malfunction Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection Tech description Replacing the exhaust back pressure usually takes care of the problem What about the obd code? An Exhaust Back Pressure (EBP) signal…
P0470 Buick Exhaust Pressure Sensor Malfunction
P0471 Buick Exhaust Pressure Sensor Range/Performance Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection What about the obd code? An Exhaust Back Pressure (EBP) signal that is detected out of range (high or low) by the Engine Control…
P0471 Buick Exhaust Pressure Sensor Range/Performance
P0472 Buick Exhaust Pressure Sensor Low Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection Tech description Replacing the exhaust back pressure usually takes care of the problem What about the obd code? An Exhaust Back Pressure (EBP) signal…