Question about 2002 Chrysler PT Cruiser

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Brother on the highway got codes 340 and 1684. Is there something he can do to get home without a tow?

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  • cindy_smi757 Jul 31, 2010

    Don't know as I am in Texas and brother is in Maryland. However, at least he knows he needs a tow and can't fix it himself on the side of the road. Thx.



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For code 340:--- ts very likely you need a new cam sensor. This is mounted to the back of the cylinder head (facing the left side of the car), and runs off a magnet on the intake cam. When windows pass under the sensor the sensor toggles its voltage back and forth to tell the engine controller where the cam's position is. Cam sensors aren't uncommon on these.
Check over the wiring pretty close going to the sensor. Its on the left end of the head just under the valve cover. It has a 3 wire electrical connector, the sensor is bolted to the head with 2 10mm bolts. Look over the wiring for any rub spots around sharp edges, etc.
For other code 1684 its nothing to worry.
1684: The battery has been disconnected within the last 50 starts.
Which is a "nothing" code, so don't worry about it. It will go away after some driving but for other code 340 the sensor has to be checked and replaced. its not a costly part.Its a $30 part. you can get it from near by auto stores in that area and replace the sensor and continue. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Jul 31, 2010


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