DTC P1391 is "Intermittent loss of Camshaft Position Sensor (CMP) or Crankshaft Position Sensor (CKP)".
So the problem is with the CMP or CKP or the wiring in the circuit.
The Camshaft Position Sensor is located in the distributor on all engines.
For this test, an analog (non-digital) voltmeter is needed. Do not remove the distributor connector from the distributor. Using small paper clips, insert them into the backside of the distributor wire harness connector to make contact with the terminals. Be sure that the connector is not damaged when inserting the paper clips. Attach voltmeter leads to these paper clips.
Since you replaced the CKP, we can assume it is good for the time being. But I would inspect the flywheel for damage. A damaged flywheel will make a good CKP send a bad signal.
Posted on Oct 25, 2008
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Posted on Jan 02, 2017
SOURCE: 1391 dtc
need to know the year, model and make, also engine size. before i can look up the code.
Posted on Apr 21, 2011
Mar 09, 2015 | 2001 Chrysler PT Cruiser
Jun 07, 2017 | 2000 Dodge Ram 1500 Truck
Oct 14, 2017 | 1998 Dodge Durango
Dec 21, 2012 | 1999 Dodge Intrepid
Feb 06, 2011 | 2000 Dodge Grand Caravan
Dec 03, 2010 | 2001 Jeep Grand Cherokee
Jul 16, 2010 | 1999 Jeep Grand Cherokee
Jan 30, 2010 | 1999 Dodge Intrepid
Jan 12, 2010 | 2000 Dodge Dakota Quad Cab
Jul 11, 2009 | 2002 Jeep Liberty
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