When a Subaru has a faulty O2 sensor the fuel management is out of whack.
yes
Faulty fuel pump. Incorrect fuel pump pressure. Dirty fuel filter. Faulty engine coolant temp sensor.
p0171 fuel system lean bank 1 Causes include faulty oxygen sensor, weak fuel pump, plugged fuel filter, low fuel pressure, misfire, faulty map sensor, etc.
There are a few reasons. crankshaft position sensor, faulty fuel pump, fuel pump regulator, throttle position sensor, oxygen sensor. Need to have it diagnosed.
Fuel rail pressure sensor fault. Most usually an out of range fault caused by a plugged fuel filter, bad fuel pump or faulty sensor. (In that order)
A fuel rail pressure regulator could cause trouble.
The P1135 is set when the Engine Control Module detects a heated oxygen sensor heater circuit malfunction. This could be caused by a faulty air-fuel ratio sensor or a faulty engine control module.
A faulty crank sensor would cause no spark and no fuel.
Pulse signals from what? speed sensor abs wheel sensor fuel pump pressure sensor crankshaft sensor camshaft sensor knock sensor
Your relay sensor is likely faulty
engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty.