Category: Cadillac

P2451 Cadillac Evaporative Emission (EVAP) System Switching Valve Stuck Closed

P2451 Cadillac Evaporative Emission (EVAP) System Switching Valve Stuck Closed OBD Code: System: Subsystem:  P2451 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Evaporative Emission (EVAP) System Switching Valve Stuck Closed Location: Analysis: Possible Causes:    Stuck Closed   Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado , Cadillac Escalade…

P2452 Cadillac Diesel Particulate Filter Differential Pressure Sensor Circuit

P2452 Cadillac Diesel Particulate Filter Differential Pressure Sensor Circuit OBD Code: System: Subsystem:  P2452 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Diesel Particulate Filter Differential Pressure Sensor Circuit Location: Analysis: Possible Causes:    Circuit Issue   Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado , Cadillac Escalade EXT ,…

P244C Cadillac Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1

P244C Cadillac Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1 Possible causes – Check coolant level– Check fuel quality– Faulty Upstream Exhaust Temperature– Upstream Exhaust Temperature harness is open or shorted– Upstream Exhaust Temperature circuit poor electrical connection– Inspect tailpipes for abnormal sediment; for example black soot, white ash, oil, coolant, or fuel–…

P244D Cadillac Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1

P244D Cadillac Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1 Possible causes – Check coolant level– Check fuel quality– Faulty Upstream Exhaust Temperature– Upstream Exhaust Temperature harness is open or shorted– Upstream Exhaust Temperature circuit poor electrical connection– Inspect tailpipes for abnormal sediment; for example black soot, white ash, oil, coolant, or fuel–…

P2448 Cadillac Secondary Air Injection System High Air Flow (Bank 1)

P2448 Cadillac Secondary Air Injection System High Air Flow (Bank 1) OBD Code: System: Subsystem:  P2448 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System High Air Flow (Bank 1) Location: Analysis: Possible Causes:  Bank 1     Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado ,…

P2449 Cadillac Secondary Air Injection System High Air Flow (Bank 2)

P2449 Cadillac Secondary Air Injection System High Air Flow (Bank 2) OBD Code: System: Subsystem:  P2449 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System High Air Flow (Bank 2) Location: Analysis: Possible Causes:  Bank 2     Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado ,…

P244A Cadillac Diesel Particulate Filter Differential Pressure Too Low Bank 1

P244A Cadillac Diesel Particulate Filter Differential Pressure Too Low Bank 1 P244A Cadillac Information for specific makes Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado , Cadillac Escalade EXT , Cadillac ATS , Cadillac CTS , Cadillac CTS Sedan , Cadillac CTS Sport Sedan , Cadillac CTS-V , Cadillac CTS-V Sedan , Cadillac…

P244B Cadillac Diesel Particulate Filter Differential Pressure Too High Bank 1

P244B Cadillac Diesel Particulate Filter Differential Pressure Too High Bank 1 Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado , Cadillac Escalade EXT , Cadillac ATS , Cadillac CTS , Cadillac CTS Sedan , Cadillac CTS Sport Sedan , Cadillac CTS-V , Cadillac CTS-V Sedan , Cadillac Catera , Cadillac DTS , Cadillac…

P2445 Cadillac Secondary Air Injection System Pump Stuck OFF

P2445 Cadillac Secondary Air Injection System Pump Stuck OFF Possible causes – Air pump fuse– Vacuum hose– Air pump assembly– Faulty Pressure Sensor– Air pump harness is open or shorted– Air pump circuit poor electrical connection– Pressure Sensor harness is open or shorted– Pressure Sensor circuit poor electrical connection What about the obd code? If…

P2446 Cadillac Secondary Air Injection System Pump Stuck On (Bank 2)

P2446 Cadillac Secondary Air Injection System Pump Stuck On (Bank 2) OBD Code: System: Subsystem:  P2446 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System Pump Stuck On (Bank 2) Location: Analysis: Possible Causes:  Bank 2  Stuck On   Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado…

P2447 Cadillac Secondary Air Injection System Pump Stuck Off (Bank 2)

P2447 Cadillac Secondary Air Injection System Pump Stuck Off (Bank 2) OBD Code: System: Subsystem:  P2447 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System Pump Stuck Off (Bank 2) Location: Analysis: Possible Causes:  Bank 2  Stuck Off   Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado…

P2441 Cadillac Secondary Air Injection System Switching Valve Stuck Closed Bank 1

P2441 Cadillac Secondary Air Injection System Switching Valve Stuck Closed Bank 1 Possible causes – Faulty Vacuum Switching Valve (VSV)– Vacuum Switching Valve (VSV) harness is open or shorted– Vacuum Switching Valve (VSV) circuit poor electrical connection– Faulty Pressure Sensor– Faulty Air Switching Valve What about the obd code? If the Engine Control Module (ECM)…

P2442 Cadillac Secondary Air Injection System Switching Valve Stuck Open (Bank 2)

P2442 Cadillac Secondary Air Injection System Switching Valve Stuck Open (Bank 2) OBD Code: System: Subsystem:  P2442 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System Switching Valve Stuck Open (Bank 2) Location: Analysis: Possible Causes:  Bank 2  Stuck Open   Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe ,…

P2443 Cadillac Secondary Air Injection System Switching Valve Stuck Closed (Bank 2)

P2443 Cadillac Secondary Air Injection System Switching Valve Stuck Closed (Bank 2) OBD Code: System: Subsystem:  P2443 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System Switching Valve Stuck Closed (Bank 2) Location: Analysis: Possible Causes:  Bank 2  Stuck Closed   Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe ,…

P2444 Cadillac Secondary Air Injection System Pump Stuck ON Bank 1

P2444 Cadillac Secondary Air Injection System Pump Stuck ON Bank 1 Possible causes – Short in Air Pump circuit– Air pump assembly– Faulty Pressure Sensor– Pressure Sensor harness is open or shorted– Pressure Sensor circuit poor electrical connection What about the obd code? If the pressure level from the sensor has not reached a certain…

P2438 Cadillac Secondary Air Injection System Air Flow / Pressure Sensor Circuit High (Bank 2)

P2438 Cadillac Secondary Air Injection System Air Flow / Pressure Sensor Circuit High (Bank 2) OBD Code: System: Subsystem:  P2438 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System Air Flow / Pressure Sensor Circuit High (Bank 2) Location: Analysis: Possible Causes:  Bank 2  End of Range – Circuit Higher Than…

P2439 Cadillac Secondary Air Injection System Air Flow / Pressure Sensor Circuit Intermittent / Erratic (Bank 2)

P2439 Cadillac Secondary Air Injection System Air Flow / Pressure Sensor Circuit Intermittent / Erratic (Bank 2) OBD Code: System: Subsystem:  P2439 Cadillac – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Secondary Air Injection System Air Flow / Pressure Sensor Circuit Intermittent / Erratic (Bank 2) Location: Analysis: Possible Causes:  Bank 2  Periodically Unstable Circuit…

P2440 Cadillac Secondary Air Injection System Switching Valve Stuck Open

P2440 Cadillac Secondary Air Injection System Switching Valve Stuck Open Possible causes – Faulty Vacuum Switching Valve (VSV)– Vacuum Switching Valve (VSV) harness is open or shorted– Vacuum Switching Valve (VSV) circuit poor electrical connection– Faulty Pressure Sensor– Faulty Air Switching Valve What about the obd code? If the Engine Control Module (ECM) receives the…