Code 45
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From: Cali-For-Ni-A
Code 45
Ok so i was driving my 96 ek hatch with a d16y7 when my CEL came on. I got home and red it and its a code 45. It means "System Too Lean or Too Rich malfunction in the fuel monitoring systems". Couple of days ago I noticed my old spark plugs were white when I changed them. White meaning too lean right? So what am I to do??
Life after death
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From: In a place called Hell
If the system is to lean it can be a number of things:
Fuel Pump insufficient flow/pressure
Fuel Feed line clogged leaking
Fuel Pressure Regulator stuck open
Clogged Fuel Pump/Injector
Gasoline doesn't meet Owner's Manual spec
Deteriorated Primary HO2S sensor
Valve Clearance
Exhaust leak
Fuel Pump insufficient flow/pressure
Fuel Feed line clogged leaking
Fuel Pressure Regulator stuck open
Clogged Fuel Pump/Injector
Gasoline doesn't meet Owner's Manual spec
Deteriorated Primary HO2S sensor
Valve Clearance
Exhaust leak
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From: Cali-For-Ni-A
Thanx carta. I'm thinking its the exhaust leak, because there is a crack in my header and I noticed smoke coming from it after I put seafoam yesterday. I'll have that fixed tomorrow and hopefully that will solve it.
How can exhaust leak cause the system to run lean?
How can exhaust leak cause the system to run lean?