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Amber13037
New User
Oct 28, 2019, 6:00 AM
Post #1 of 7
(2943 views)
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FREEZE FRAME
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2006 Chevy Malibu LT 4 cyl. Is coding P0420 and is giving me a freeze frame reading that I have not a clue how to read but would like to make my own repairs. I have already replaced 02 sensor and cat. Converter. I do have an exhaust leak but is that the actual reason for the code?
DTCFRZF P0420
FUELSYS1 OL
FUELSYS2 NA
LOAD_PCT% 16.5
ETC. 189 F
SHRTFT1 0.0
LONGFT1 0.0
MAP (inhg) 11.2
RPM ( /min) 776
VSS (mph) 0
SPARKADV 2
IAF (F) 54
MAF (lblmin) 0.533
TP (%) 27.1
If anyone can help me read this to tell me what the possible issue is I would greatly appreciate it!
(This post was edited by Amber13037 on Oct 28, 2019, 6:44 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 28, 2019, 6:39 AM
Post #2 of 7
(2939 views)
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None of that stuff really matters in this situation.
The P0420 means that your bank 1 or only Catalytic Converter is no longer doing it's job. In order to set this code the rear 0/2 sensor and the upstream 0/2 sensor have to mirror each other for a period of time meaning there is no chemical change after passing through the Cat. 99% of the time, this is a bad Converter. The other 1% it can be caused by an air leak between the two sensors, very rare.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Amber13037
New User
Oct 28, 2019, 6:47 AM
Post #3 of 7
(2932 views)
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I’ve replaced all three what are the odds of a bad 02 sensor?
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 28, 2019, 6:50 AM
Post #4 of 7
(2930 views)
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Replaced all 3 what?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 28, 2019, 7:15 AM
Post #5 of 7
(2926 views)
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Quote from top ">I do have an exhaust leak <"
How about fix that first then deal with codes?
T
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Amber13037
New User
Oct 28, 2019, 7:45 AM
Post #6 of 7
(2919 views)
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Both 02 sensors and the cat converter
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 28, 2019, 8:25 AM
Post #7 of 7
(2911 views)
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As I stated in my first answer, an exhaust leak is one of the things that will cause that code. It introduces oxygen that corrupts the sensor readings.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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