P0451 Citroen Fuel Tank Pressure Sensor Range/Performance Possible causes – Fuel Tank Pressure Sensor– Fuel Tank Pressure sensor harness is open or shorted– Fuel Tank Pressure sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) What about the obd code? An improper voltage signal from the fuel tank pressure sensor is sent to Engine…
Category: Citroen
P0452 Citroen EVAP System Pressure Sensor/Switch Low Input
P0452 Citroen EVAP System Pressure Sensor/Switch Low Input Possible causes – Faulty Evaporative Emission System (EVAP) Pressure sensor– Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted– Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection Tech description What about the obd code? An excessively low voltage from the sensor is sent…
P0444 Citroen Evaporative Emission Control System Purge Control Valve Circuit Open
P0444 Citroen Evaporative Emission Control System Purge Control Valve Circuit Open Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection What about the obd code? – An excessively low voltage signal is sent…
P0445 Citroen EVAP Purge Solenoid Circuit
P0445 Citroen EVAP Purge Solenoid Circuit Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection What about the obd code? – An excessively high voltage signal is sent to Engine Control Module (ECM)…
P0446 Citroen Evaporative Emission Vent System Performance
P0446 Citroen Evaporative Emission Vent System Performance Possible causes – Plugged vapor canister– Faulty vent solenoid– Pinched or blocked EVAP hose– Faulty FTP sensor Tech description Dirt and dust intrusion into the EVAP canister vent hose assembly, resulting in restricted air flow, may cause this condition. What about the obd code? The Powertrain Control Module…
P0447 Citroen EVAP System Vent Control Circuit Open
P0447 Citroen EVAP System Vent Control Circuit Open Possible causes – Faulty canister vent control valve– Purge Control Valve harness is open or shorted– Purge Control Valve electrical circuit poor connection What about the obd code? An improper voltage signal is sent to Engine Control Module (ECM) through Evaporative Emission System (EVAP) canister vent control…
P0448 Citroen EVAP System Vent Control Circuit Shorted
P0448 Citroen EVAP System Vent Control Circuit Shorted Possible causes – Faulty canister vent control valve– Purge Control Valve harness is open or shorted– Purge Control Valve electrical circuit poor connection What about the obd code? EVAP canister vent control valve remains closed under specified driving conditions. Symptoms – Engine Light ON (or Service Engine…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow 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 canister pump module…
P0440 Citroen EVAP Canister Purge Regulator Valve
P0440 Citroen EVAP Canister Purge Regulator Valve Possible causes – Missing or loose fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap– EVAP canister or fuel tank leaks– EVAP system hose leaking– Fuel tank leaking Tech description The P0440 Citroen code…
P0441 Citroen EVAP System Incorrect Purge Flow
P0441 Citroen EVAP System Incorrect Purge Flow Possible causes – Missing Fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap– Incorrect fuel tank vacuum relief valve Tech description The P0441 Citroen code means that the control module has detected a leak…
P0442 Citroen EVAP Control System Leak Detected Small Leak
P0442 Citroen EVAP Control System Leak Detected Small Leak Possible causes – Missing or loose fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap – EVAP canister or fuel tank leaks– EVAP system hose leaking– Fuel tank leaking Tech description What…
P0443 Citroen EVAP Canister Purge Valve Circuit Malfunction
P0443 Citroen EVAP Canister Purge Valve Circuit Malfunction Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection What about the obd code? An improper voltage signal is sent to Engine Control Module (ECM)…
P043C Citroen Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2)
P043C Citroen Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043C Citroen – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 End of Range – Circuit Lower Than Expected Tech…
P043D Citroen Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2)
P043D Citroen Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043D Citroen – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 End of Range – Circuit Higher Than Expected Tech…
P043A Citroen Catalyst Temperature Sensor Circuit (Bank 2 – Sensor 2)
P043A Citroen Catalyst Temperature Sensor Circuit (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043A Citroen – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 Circuit Issue Tech description: Citroen Vehicle:2013 Citroen,2012 Citroen,2011 Citroen,2010 Citroen,2009 Citroen,2008…
P043B Citroen Catalyst Temperature Sensor Circuit Range / Performance (Bank 2 – Sensor 2)
P043B Citroen Catalyst Temperature Sensor Circuit Range / Performance (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043B Citroen – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit Range / Performance (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 Out of Expected Range Tech…
P0436 Citroen Catalyst Temperature Sensor Range/Performance Bank 2 Sensor 1
P0436 Citroen Catalyst Temperature Sensor Range/Performance Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0436 Citroen code means that the vehicle’s control module has detected that the three-way catalytic…
P0437 Citroen Catalyst Temperature Sensor Low Input Bank 2 Sensor 1
P0437 Citroen Catalyst Temperature Sensor Low Input Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0437 Citroen code means that the vehicle’s control module has detected that the three-way…
P0438 Citroen Catalyst Temperature Sensor High Input Bank 2 Sensor 1
P0438 Citroen Catalyst Temperature Sensor High Input Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0438 Citroen code means that the vehicle’s control module has detected that the three-way…
P0439 Citroen Catalyst Heater Control Circuit Bank 2
P0439 Citroen Catalyst Heater Control Circuit Bank 2 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0439 Citroen Description The Engine Control Module (ECM) monitors the switching frequency ratio of…