Possible causes – Fuel system internal leak– Fuel supply pump or injector(s)– Faulty pressure limiter valve– Faulty fuel pressure sensor When is the obd code mean? Fuel rail pressure lower than expected Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Tag: SUBARU
P1401 SUBARU Fuel Tank Pressure Control System Function Problem
Possible causes – Fuel tank pressure control solenoid harness is open or shorted– Fuel tank pressure control solenoid circuit poor electrical connection– Faulty fuel tank pressure control solenoid Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
P1400 SUBARU Fuel Tank Pressure Control Solenoid Low Input
Possible causes – Fuel Tank Pressure Control Solenoid harness is open or shorted– Fuel Tank Pressure Control Solenoid circuit poor electrical connection– Fualty Fuel Tank Pressure Control Solenoid Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
P0052 SUBARU HO2S21 Heater Control Circuit High
Possible causes – Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection– Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse– Faulty Engine Control Module (ECM) When is…
P1516 SUBARU Idle Air Control Solenoid Signal 4 Circuit Low Input
Possible causes – Idle Air Control Solenoid valve harness is open or shorted – Idle Air Control Solenoid valve circuit poor electrical connection – faulty Idle Air Control Solenoid valve Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1516 SUBARU OBD Code Description The Idle Air Control Solenoid valve is incorporated in…
P0174 SUBARU System Too Lean Bank 2
Possible causes – Intake air leaks– Faulty front heated oxygen sensor– Ignition misfiring – Faulty fuel injectors – Exhaust gas leaks– Incorrect fuel pressure– Lack of fuel– Faulty Mass Air Flow (MAF) sensor– Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech description If the P0171 is combined with the P0174 code, it’s very likely that…
P0410 SUBARU 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 When is the obd code mean? The secondary air injection system does not detect the…
P0411 SUBARU Secondary Air Injection System Incorrect Flow Detected
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 When is the obd code mean? The secondary air injection system does not detect the…
P2440 SUBARU 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 When is the obd code mean? If the Engine Control Module (ECM) receives the pulsation signal from the sensor despite the ECM ordering…
P2441 SUBARU Secondary Air Injection System Switching Valve Stuck Closed
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 When is the obd code mean? If the Engine Control Module (ECM) receives the pulsation signal from the sensor despite the ECM ordering…