Code 45
11-06-2003, 02:33 PM
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Re: Code 45 (Mr. 1582)
A code 45 is System Too Lean or Too Rich malfunction in the fuel monitoring systems.
What componets are in the fuel monitoring systems.
What componets are in the fuel monitoring systems.
11-07-2003, 07:38 PM
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Re: Code 45 (Mr. 1582)
the ecu receives input from various sensors in order to maintain an ideal a/f mixture. if it detects a problem 3x under similar circumstances (driving conditions) it sets the MIL. code 45 normally results when a/f mixture compensation is beyond the ecu's fuel trim parameters. look for any component associated w/ fuel delivery. start w/ fuel delivery: fuel pressure, filter, regulator, etc.. remember, the ecu doesn't have a sensor which measures fuel pressure...it always assumes a pre-determined range of values. i had a code 45 on my 00 si and it turned out to be a clogged cat.
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