Question about Chrysler 300M
Have 5 volt refrence also code p0688
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Posted on Jan 02, 2017
Ground points are in different locations throughout wiring harness. If you had any work done to engine it is very possible to have missed one of the grounding eyelets during the process of putting things together. Check along wiring harness in any area you can see or reach to try to locate any loose or disconnected ground looks.
Posted on Nov 23, 2011
SOURCE: what does the code P0688 mean
code P0688 Auto Shut Down (asd) relay sensor circuit is low. Could be a bad or dirty battery connection. The other that could be going bad throwing the code is a bad Body Control Module (bcm). I would start with the battery, is their corrosion, has it ever been replaced, low cells?.
Posted on Dec 27, 2011
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OBDII Problem related to the computer controlled system not sending a signal to the positive injection banks. Could be cam or crank sensor problem as well. These systems works on Ohm resistant's and the introduction of a 12 volt tester could compromise the system.
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