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Chrysler
300
Trouble Codes
OBD1 Codes
Code 51
OBD1 code 51 51 air/fuel at limit. What are the possible causes?
DALESWENSON
MEMBER
1994 CHRYSLER 300
130,000 MILES
I changed the oxygen sensor about two years ago and it seemed to fix it for awhile. It's starting to run rough especially when cold.
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Sunday, March 18th, 2012 AT 8:56 PM
2 Replies
JACOBANDNICKOLAS
CERTIFIED MECHANIC
I am showing a code 51 is a lean system. Check for vacuum leaks.
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Sunday, March 18th, 2012 AT 9:05 PM
RASMATAZ
CERTIFIED MECHANIC
You need to inspect and test again the O2 sensor-
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Sunday, March 18th, 2012 AT 9:08 PM
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