SOURCE: Emissions light - 2007 Buick LaCrosse
sounds like you are having an o2 sensor problem. have that particular part looked at
P1005 is model specific, Dodge is a problem with the manifold tuning valve.
Code 158 and 157 are for a problem with the O2 sensor for bank two after the catalytic converter.
Code 128 is for a problem with the thermostat or the engine is not reaching normal temp.
The O2 sensor codes could be caused from the manifold valve or they could be caused by a faulty O2 sensor.
I would start with the coolant temp problem and work back.
SOURCE: Emissions System warning keeps coming on. Mechanic & muffler shop disagree.
Start with the first mechanic who replaced the battery and have them check the charging system. (Alternator) They should have done this when changing a battery, to rule that out as a problem in the first place. Explain the problems you have been having, as a bad charging system can cause all sorts of electronics problems and have them check the engine codes and have them explain what they are.
You could also go back to the muffler shop and tell them their sensor replacement did not fix the problem and have them correct their work.
Diagnosing Alternator Problems EricTheCarGuy
SOURCE: Check engine light on 2007 Chrysler 300. P1005
Are you sure the code is P 1005? Either the search and I missed it or Somehow I am missing some data . I see everything from P 0016 Crank/Cam timing Misalign to P 2503 Charging System Voltage low but not a P 1005
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