P1682 OBD2 code

Asked by GuruTSKWN Jun 30, 2018 at 07:41 PM about the 2007 Chevrolet Cobalt LS Coupe FWD

Question type: Maintenance & Repair

I just changed the outboard o2 sensor
cause i was getting a bunch of codes
p0036,p0054,p0300, p0302 etc  come
up causing missfiring. I also found
water in spark plug tubes 2&3 and
cleaned out. Now all the codes are
gone but now getting p1682. I reset the
code and it runs great. after turning car
off and sitting awhile the engine light
comes back on and getting loss of
power icon on dash and p1682code.
The reader also shows the
CAT,EVA,O2S& HTR on the IM moniter
status. What should i look for

1 Answer
8,850

BritishTech77 answered 6 years ago

Several things https://www.autocodes.com/p1682_chevrolet.html Read that page it will explain better. You have an ignition timing fault.

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