P2408 Buick Fuel Cap Sensor / Switch Circuit OBD Code: System: Subsystem: P2408 Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Fuel Cap Sensor / Switch Circuit Location: Analysis: Possible Causes: Circuit Issue Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
Category: Buick
P2408 Buick Fuel Cap Sensor / Switch Circuit
P2409 Buick Fuel Cap Sensor / Switch Circuit Range / Performance OBD Code: System: Subsystem: P2409 Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Fuel Cap Sensor / Switch Circuit Range / Performance Location: Analysis: Possible Causes: Out of Expected Range Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse…
P2409 Buick Fuel Cap Sensor / Switch Circuit Range / Performance
P240A Buick Evaporative Emission (EVAP) System Leak Detection Pump Heater Control Circuit / Open OBD Code: System: Subsystem: P240A Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Evaporative Emission (EVAP) System Leak Detection Pump Heater Control Circuit / Open Location: Analysis: Possible Causes: Open Circuit Tech description: Buick Vehicle:Buick Regal – ?Buick…
P2403 Buick Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit / Open
P2404 Buick Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit Range / Performance OBD Code: System: Subsystem: P2404 Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit Range / Performance Location: Analysis: Possible Causes: Out of Expected Range Tech description: Buick Vehicle:Buick Regal…
P2404 Buick Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit Range / Performance
P2405 Buick Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit Low OBD Code: System: Subsystem: P2405 Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit Low Location: Analysis: Possible Causes: End of Range – Circuit Lower Than Expected Tech description: Buick Vehicle:Buick Regal…
P2405 Buick Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit Low
P2406 Buick Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit High OBD Code: System: Subsystem: P2406 Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit High Location: Analysis: Possible Causes: End of Range – Circuit Higher Than Expected Tech description: Buick Vehicle:Buick Regal…
P2400 Buick Evaporative Emission (EVAP) System Leak Detection Pump Control Circuit / Open
P2401 Buick Evaporative Emission System Leak Detection Pump Control Circuit Low Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in…
P2401 Buick Evaporative Emission System Leak Detection Pump Control Circuit Low
P2402 Buick Evaporative Emission (EVAP) System Leak Detection Pump Control Circuit High Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) Tech description What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates…
P2402 Buick Evaporative Emission (EVAP) System Leak Detection Pump Control Circuit High
P2403 Buick Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit / Open OBD Code: System: Subsystem: P2403 Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Evaporative Emission (EVAP) System Leak Detection Pump Sensore Circuit / Open Location: Analysis: Possible Causes: Open Circuit Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera –…
P2344 Buick (Cylinder No.9) Above Knock Threshold
P2345 Buick (Cylinder No.10) Above Knock Threshold OBD Code: System: Subsystem: P2345 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.10) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 10 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2345 Buick (Cylinder No.10) Above Knock Threshold
P2346 Buick (Cylinder No.11) Above Knock Threshold OBD Code: System: Subsystem: P2346 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.11) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 11 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2346 Buick (Cylinder No.11) Above Knock Threshold
P2347 Buick (Cylinder No.12) Above Knock Threshold OBD Code: System: Subsystem: P2347 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.12) Above Knock Threshold Location: Analysis: Possible Causes: cylinder 12 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2347 Buick (Cylinder No.12) Above Knock Threshold
P2400 Buick Evaporative Emission (EVAP) System Leak Detection Pump Control Circuit / Open OBD Code: System: Subsystem: P2400 Buick – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Evaporative Emission (EVAP) System Leak Detection Pump Control Circuit / Open Location: Analysis: Possible Causes: Open Circuit Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera –…
P2341 Buick (Cylinder No.6) Above Knock Threshold
P2342 Buick (Cylinder No.7) Above Knock Threshold OBD Code: System: Subsystem: P2342 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.7) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 7 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2342 Buick (Cylinder No.7) Above Knock Threshold
P2343 Buick (Cylinder No.8) Above Knock Threshold OBD Code: System: Subsystem: P2343 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.8) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 8 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2343 Buick (Cylinder No.8) Above Knock Threshold
P2344 Buick (Cylinder No.9) Above Knock Threshold OBD Code: System: Subsystem: P2344 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.9) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 9 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2337 Buick (Cylinder No.2) Above Knock Threshold
P2338 Buick (Cylinder No.3) Above Knock Threshold OBD Code: System: Subsystem: P2338 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.3) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 3 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2338 Buick (Cylinder No.3) Above Knock Threshold
P2339 Buick (Cylinder No.4) Above Knock Threshold OBD Code: System: Subsystem: P2339 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.4) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 4 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2339 Buick (Cylinder No.4) Above Knock Threshold
P2340 Buick (Cylinder No.5) Above Knock Threshold OBD Code: System: Subsystem: P2340 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.5) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 5 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P2340 Buick (Cylinder No.5) Above Knock Threshold
P2341 Buick (Cylinder No.6) Above Knock Threshold OBD Code: System: Subsystem: P2341 Buick – (ASE) Powertrain Ignition System or Engine Misfire Trouble Code Description: (Cylinder No.6) Above Knock Threshold Location: Analysis: Possible Causes: Cylinder 6 Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…