Front oxygen sensor signal activate failure
Check if the front oxygen sensor is connected effec-
tively. If the error still persist ask for assistance.
Front oxygen sensor heating circuit low current
FPR Coil Circuit High Voltage
Check if the fuel pump relay is connected effectively.
If the error still persist ask for assistance.
FPR Coil Circuit Low Voltage or Open
Slow response of front oxygen sensor from thin to
thick
Check if the front oxygen sensor is connected effec-
tively. If the error still persist ask for assistance.
Slow response of front oxygen sensor from thick to
thin
Remove ECM and plug again. If the error still persist
ask for assistance.
1st cylinder injector short circuit to high voltage
Check if the front oxygen sensor is connected effec-
tively. If the error still persist ask for assistance.
1st cylinder injector short circuit to low volt-
age/open circuit
Low intake pressure in steady state
Check if the intake mainfold pressure sensor is con-
nected effectively. If the error still persist ask for as-
sistance.
Manifold Absolute
Pressure Sensor (MAP)
MAP Circuit Low Voltage or Open
Intake pressure sensor signal
Intake pressure sensor signal error fluctuation
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