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Codes p0320 and p1391 - Jeep Cars & Trucks

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What kind of Jeep?

Posted on Feb 08, 2014


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Posted on Jan 02, 2017

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SOURCE: P0320 & P1391 OBD codes displayed.

P 0320 = No Crank Reference Signal to PCM. No Crank (shaft position) reference signal detected during engine cranking (starting).
P 1391 =Intermittent Loss of either Camshaft Position Sensor or Crankshaft Position Sensor.
Hav you attemtped the "3-Key-Ons" method to see these codes on your digital Odometer (assuming you have one) Turn the Key from Off to On (not start) three (3) times. On the third (3rd) time leave the Key in the "On" position (not start). Look at your Dogotal Odometer (if so equipped). The Codes, one at a time should appear. The Last Code will be "P donE".
If te engine is performing without problems: disconnect the negative side of the Battery and wait at least 5 to 30 minutes. Reconnect the Battery. Re-preform the 3-Key-On's and see if and Codes are now showing.
If you start having Start or Running problems becoming more and more frequent: consider replacing the Crankshaft Position Sensor. If this sensor "fails" you may not get any fire to anything, as this is the signal that is necessary for the PCM to initiate the Firing Sequence. The PCM will not send a signal to even the Ignition Coil to begin.

Posted on Jan 08, 2010

ZJLimited
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SOURCE: 98 Plymouth breeze trouble codes

P0700 - Transmission Control System Malfunction.

P1391 - Intermittent Loss of CMP (Camshaft) or CKP (Cranckshaft).

P0725 - Engine Speed input Circuit Malfunction.

P1595 - Speed Control Solenoid Circuit Open Or Shorted

P0320 - Ignition Engine Speed Input Circuit Malfunction


I suggtes take off each sensor and test resistance in everyone (check this measure in the Service Manual), if they are out range,m just replace it.

Keep us updated.

Posted on Sep 27, 2010

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Went to Deq for emissions test and the diagnostic codes read p0320 on 2004 Hyundai sonata what needs to be replaced?


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What do code p1391 mean


P1391 means intermittent loss of CKP and CMP , these sensor are monitor when the engine cranking,or running,These can come from a damage flex plate for the cranksensor or damage tone wheel for the camsensor,to a failing cranksensor ,failing camshaft sensor, to even the harness intermittent connnection

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P320


What engine?

P0320 and P1391 are crank sensor codes. The symptoms you have certainly point towards one possibly going bad.

if this is a 4.0 straight six you can find the crank sensor on the drivers side of the transmission where it blots up to the engine on the top side. If you look in between the intake and the firewall you should be able to locate the harness and follow it to the sensor. The sensors are relatively inexpensive and would be an excellent start.

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98 wrangler shuts off and won't start intermittently. Codes are P1594, 0320, 0463 & 1391. Do I change the crank senor, cam sensor or fuel filter/regulator??


(this is for others who may be viewing this problem)
P1594 = charging system voltage is too high
P0320 = crankshaft position sensor (CKP)/engine speed (RPM) sensor-circuit malfunction
P0463 = fuel level sensor circuit, high output
P1391 = intermittent loss of CMP (camshaft position) or CKP (crank position) sensor

Probably start with changing the crank sensor. But keep in mind that the high charging system voltage may be causing the other electrical sensor problems. The voltage regulator (probably located internally in the alternator) is not regulating voltage properly. So changing the alternator may be needed as well. Price the parts and start with replacing the less expensive first.

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1 Answer

P0320 & P1391 OBD codes displayed, found during emissions testing but there are NO engine or driving problems idicated.


P 0320 = No Crank Reference Signal to PCM. No Crank (shaft position) reference signal detected during engine cranking (starting).
P 1391 =Intermittent Loss of either Camshaft Position Sensor or Crankshaft Position Sensor.
Hav you attemtped the "3-Key-Ons" method to see these codes on your digital Odometer (assuming you have one) Turn the Key from Off to On (not start) three (3) times. On the third (3rd) time leave the Key in the "On" position (not start). Look at your Dogotal Odometer (if so equipped). The Codes, one at a time should appear. The Last Code will be "P donE".
If te engine is performing without problems: disconnect the negative side of the Battery and wait at least 5 to 30 minutes. Reconnect the Battery. Re-preform the 3-Key-On's and see if and Codes are now showing.
If you start having Start or Running problems becoming more and more frequent: consider replacing the Crankshaft Position Sensor. If this sensor "fails" you may not get any fire to anything, as this is the signal that is necessary for the PCM to initiate the Firing Sequence. The PCM will not send a signal to even the Ignition Coil to begin.

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