Code 28, 32...explain in lamen terms?
Thread Starter
Instructor
Joined: Oct 2003
Posts: 232
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From: Memphis Tn
Code 28, 32...explain in lamen terms?
Code 28- I have installed manual fan switches. Could this "inspire" this code?
Code 32- C.E light only at highway speeds
('92 Lt1 Auto @ 105,000)
[Modified by MPforUSMC, 7:48 AM 4/29/2004]
Code 32- C.E light only at highway speeds
('92 Lt1 Auto @ 105,000)
[Modified by MPforUSMC, 7:48 AM 4/29/2004]
Burning Brakes
Joined: May 2000
Posts: 1,160
Likes: 10
From: Nashville TN
Re: Code 28, 32...explain in lamen terms? (MPforUSMC)
manual fan switch won't affect it, I know that much.
What do the codes read in the manual, don't have mine handy?
[Modified by kman0066, 2:29 AM 4/29/2004]
What do the codes read in the manual, don't have mine handy?
[Modified by kman0066, 2:29 AM 4/29/2004]
Burning Brakes
Joined: Jul 2002
Posts: 871
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From: Costa Mesa CA
Re: Code 28, 32...explain in lamen terms? (MPforUSMC)
Code 32...
There are a number of precise conditions that must occur to set a code 32. I don't remember all of them but one of them is that you must sustain a steady RPM for a certain amount of time and that RPM must be above 1500. This accounts for you noticing the light coming on "at highway speeds".
But as the book says, "The most common cause of a code 32 being set is a malfunctioning EGR switch."
BIG JIM
There are a number of precise conditions that must occur to set a code 32. I don't remember all of them but one of them is that you must sustain a steady RPM for a certain amount of time and that RPM must be above 1500. This accounts for you noticing the light coming on "at highway speeds".
But as the book says, "The most common cause of a code 32 being set is a malfunctioning EGR switch."
BIG JIM
Le Mans Master
Joined: Jan 2003
Posts: 5,858
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From: Santa Maria CA
Re: Code 28, 32...explain in lamen terms? (MPforUSMC)
Code 28 is "Quad Driver Module #3 Circuit"
Check the Resistance of the Air Conditioning clutch relay and the
Cooling Fan Relay coils. Replace any relay with less than 20 Ohms.
Check the Resistance of the Air Conditioning clutch relay and the
Cooling Fan Relay coils. Replace any relay with less than 20 Ohms.
Burning Brakes
Joined: May 2000
Posts: 1,160
Likes: 10
From: Nashville TN
Re: Code 28, 32...explain in lamen terms? (86PACER)
This is starting to sound familiar to me, it was an ECM in the end for me. Did you get the check code at the beginning. I think it is code 12. Also, check the CCM codes.
Team Owner
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Code 28, 32...explain in lamen terms? (kman0066)
Code 32 is fairly common, its usually a bad EGR solenoid/switch, but it can be a clogged EGR pipe or loss of vaccuum.
Thread Starter
Instructor
Joined: Oct 2003
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From: Memphis Tn
Re: Code 28, 32...explain in lamen terms? (vader86)
I got a code 12, but the manual says that just means its in diagnostic mode. Im guesing the best thing to do is just take it to the shop and have them inspect it. I think this is beyond my abaility to do my self :confused:
Team Owner
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From: San Pedro CA
Re: Code 28, 32...explain in lamen terms? (MPforUSMC)
ok... code 32... easy. It is not the solinoid or switch... it is the valve itself.
you see, for a code to be set, the computer has to get the error. As it stand, the code 32 will set on startup if the solenoid or switch fails the start test. if it waits, then the failure is with the valve itself.
as for the 28... fix the 32 first and see if the 28 goes away. reset the computer (unplug the fuse or disconnect the battery for about a minute) and see if any lights come back on.
the 28 could be a stored code from long ago... and not representitive of a real problem.
you see, for a code to be set, the computer has to get the error. As it stand, the code 32 will set on startup if the solenoid or switch fails the start test. if it waits, then the failure is with the valve itself.
as for the 28... fix the 32 first and see if the 28 goes away. reset the computer (unplug the fuse or disconnect the battery for about a minute) and see if any lights come back on.
the 28 could be a stored code from long ago... and not representitive of a real problem.
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