2000 dodge diesel code

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mike carlton
Posts: 25
Joined: Wed Jul 04, 2007 5:36 pm
Location: cottonwood ca

2000 dodge diesel code

Post by mike carlton »

My tach will stop working and the check engine light comes on,the tach will start working but the light stays on.By turning my ignition switch on and off three times it will show a code of p 1693 Has anyone had this problem or know what that code means?
Not looking foward to paying a mechanic if it is a sensor or something that I could do myself.
Thanks,Mike Carlton
cottonwoody
Byron
Posts: 326
Joined: Wed Jan 10, 2007 12:14 am
Location: El Segundo Ca.

Re: 2000 dodge diesel code

Post by Byron »

Code P-1693 is set when a DTC (diagnostic trouble code) is detected in a companion module. In other words the PCM (powertrain control module) has detected a DTC in the ECM (engine control module) or ECM has detected a fault code in the PCM.
If this code was read with a low budget code reader you will get no details. You need to talk to it with a good scan tool that can talk with the ECM, PCM, BCM, etc.
The issue with Chrysler is that there are several modules that all communicate over a common buss.
The tach not working when the light is on is a good sign of a failing crank sensor as that is where the RPM signal comes from.
mike carlton
Posts: 25
Joined: Wed Jul 04, 2007 5:36 pm
Location: cottonwood ca

Re: 2000 dodge diesel code

Post by mike carlton »

Thanks Byron,That makes sense,I will get it in to the mechanic.Mike
cottonwoody
Byron
Posts: 326
Joined: Wed Jan 10, 2007 12:14 am
Location: El Segundo Ca.

Re: 2000 dodge diesel code

Post by Byron »

Let us know what you find out.
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