Engine light is on / engine codes
Thread Starter
Super Member
Joined: Apr 2003
Posts: 563
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From: Wash., D.C.
C280
Engine light is on / engine codes
The car is running fine, but the check engine light is on.
I don't have the codes #s right in front of me (I'll get them later and post them). I've got a "fuel trim" code and a "fuel level" code...
Someone mentioned MAS before, but the fuel level is a new one to me...
Anyone else have similar problems ?
I don't have the codes #s right in front of me (I'll get them later and post them). I've got a "fuel trim" code and a "fuel level" code...
Someone mentioned MAS before, but the fuel level is a new one to me...
Anyone else have similar problems ?
MBWorld Fanatic!
Joined: Nov 2001
Posts: 4,260
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From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
The ONLY way to find and fix the problem is to have your dealer pull the codes from the computer. Even if you have it done for free at say an Auto Zone you will not have enough detail to find out which component to change. You can guess all night but you can't be certain unless the codes are pulled
Super Member
Joined: May 2004
Posts: 755
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From: USA
LS7 powered Corvette
The fuel trim code could definitely be the mass air flow sensor but it is not likely...... we don't see that many go bad. What engine is it? 104 or 112? Depending on which one it is and the mileage I may have a few cheap ideas.....
Most of the time, those codes appear due to unmetered air coming into the engine, not because of a faulty sensor. Or poor injector spray pattern or a couple fuel related items. 90% of the time on the 112, replacing the intake inlet seals and throttle actuator o-ring will cure the problem but you need an SDS computer to reset the fuel adaptations.
Most of the time, those codes appear due to unmetered air coming into the engine, not because of a faulty sensor. Or poor injector spray pattern or a couple fuel related items. 90% of the time on the 112, replacing the intake inlet seals and throttle actuator o-ring will cure the problem but you need an SDS computer to reset the fuel adaptations.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 2,332
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From: Bloomington, IN
1997 Toyota Tacoma 4x4
Originally posted by [MB]CRS
The fuel trim code could definitely be the mass air flow sensor but it is not likely...... we don't see that many go bad.
The fuel trim code could definitely be the mass air flow sensor but it is not likely...... we don't see that many go bad.
Super Member
Joined: May 2004
Posts: 755
Likes: 2
From: USA
LS7 powered Corvette
I don't know man. With all the BS you have to go through now with EDAC, nobody really does them. And if you noticed, they are starting to tighten up on them. The SDS no longer gives you a numerical value for kg/h flow measured by the sensor, only the signal voltage to the control unit.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 2,332
Likes: 1
From: Bloomington, IN
1997 Toyota Tacoma 4x4
Originally posted by [MB]CRS
I don't know man. With all the BS you have to go through now with EDAC, nobody really does them.
I don't know man. With all the BS you have to go through now with EDAC, nobody really does them.
