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P1670

19K views 4 replies 4 participants last post by  SouthFlstrokin' 
#1 ·
My truck wouldn't start earlier, it was cranking like mad as it had been running 15min before, however it didnt fuel,so I poped the hood did a quick check, all looked good. I pulled codes at home and go a P1670 Which was something about a sensor not sending a signal or something generic. However it didn't mention which one, how do I figure out what sensor is giving me trouble?
 
#3 ·
DTC P1668 and P1670 indicates that a communication error has occurred between the PCM and the IDM.

Possible causes:
Open fuse, IDM relay, Open or shorted IDM enable circuit, IDM powering circuit, PCM

Check for other codes. Key on, engine off.

l Perform KOEO On-Demand Self Test and retrieve Continuous DTCs.
If DTC P1298 is also present, REPLACE the IDM.
 
#4 ·
Thanks guys!

I did the IDM mod a few months back, I wonder if this is related. This must be why it wasn't getting fuel and starting earlier. After a minute or so it worked for the hr or so it took to get me home, so maybe a sporadicly loose connection?
 
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