1999 Grand Cherokee Check Engine codes

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Marvin Oliver

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May 25, 2005, 1:10:42 AM5/25/05
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check engine codes are
p0203,p0202, p0204, p0206, p0207, p0208, and p0121

Engine does not seem to be missing so I don't know why the first six codes.
The rpms will change suddenly when at and idle or just sort of coasting
(very little gas applied).

How do I check the throttle position sensor? Is it possible that there is a
common cable/plug for all these codes that could be causing the problem?

tia
jim


L.W. Hughes III

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May 25, 2005, 1:35:11 AM5/25/05
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Did you try out one of these snake oils? Sugar?
http://www.wjjeeps.com/faultcodes.htm#0200 Might clean their
connections, and: http://members.cox.net/wilsond/tb/tb.html
God Bless America, ßill O|||||||O
mailto:LWHug...@aol.com http://www.billhughes.com/

mic canic

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May 28, 2005, 10:26:33 AM5/28/05
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these are the type of codes that should go to a dealer due to they affect
emissions

D1w

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Apr 22, 2017, 11:18:02 AM4/22/17
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replying to Marvin Oliver, D1w,26 wrote:
Pop 121


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for full context, visit http://www.motorsforum.com/jeep/1999-grand-cherokee-check-engine-codes-66860-.htm


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