Help Again code 42
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Joined: Feb 2003
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Help Again code 42
Hello
Its me needing help again. Im getting a code 42 with engine running, The book is telling me that it is running rich how can I correct this I all ready change the O2 sensor.
Thanks once again
Its me needing help again. Im getting a code 42 with engine running, The book is telling me that it is running rich how can I correct this I all ready change the O2 sensor.
Thanks once again
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Help Again code 42
The oxygen sensor doesn't make the engine run rich - it just tells the computer IF it happens. Changing it will rarely fix that code, and then, only if the code was erroneous from the sensor being bad. If the tailpipe isn't turning black with soot, it's probably not running rich.
A rich condition can be cause by blowby (worn rings), leaking injector(s), leaking fuel pressure regulator, bad MAP, bad MAF, wrong timing, bad plugs, bad wires, bad cap/rotor, bad ignition module, weak coil, bad ECT, bad ACT, bad PCV, or probably some other things. Start checking them according to the Haynes manual and you'll probably find the problem.
A rich condition can be cause by blowby (worn rings), leaking injector(s), leaking fuel pressure regulator, bad MAP, bad MAF, wrong timing, bad plugs, bad wires, bad cap/rotor, bad ignition module, weak coil, bad ECT, bad ACT, bad PCV, or probably some other things. Start checking them according to the Haynes manual and you'll probably find the problem.
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