Question about 2003 Jeep Wrangler

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Error Code 0320

320 Crankshaft position sensor reference signal cannot be found while the engine is cranking.

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The wiring that feeds a signal from the crank position sensor to the computer should be checked first. Disconnecting and reconnecting the wiring connector may help. Without the right diagnostic equipment, it is difficult to determine if the sensor is at fault.

Posted on Sep 27, 2008

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Need to know the location of both crankshaft position sensor on 2008 Chevrolet hhr plz thx


Only has one crankshaft position sensor ,an cam sensors . To change the crank sensor u would have to pull the starter ,located above starter .
Camshaft Position Sensor Replacement - Intake Camshaft Position Sensor Replacement - Exhaust
After a crank sensor replacement a
Crankshaft Position System Variation Learn has to be done !
Important: The crankshaft position (CKP) system variation learn procedure is required when the following service procedures have been performed, regardless of whether DTC P0315 is set:
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Engine replacement


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Engine control module (ECM) replacement


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Crankshaft damper replacement


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Crankshaft replacement


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CKP sensor replacement


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Any engine repairs which disturb the crankshaft to CKP sensor relationship

Important: The scan tool monitors certain component signals to determine if all the conditions are met to continue with the CKP system variation learn procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:
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CKP sensor activity--If there is a CKP sensor condition, refer to the applicable DTC that set.


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Camshaft position (CMP) signal activity--If there is a CMP signal condition, refer to the applicable DTC that set.


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Engine coolant temperature (ECT)--If the engine coolant temperature is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.

Apr 04, 2016 | Chevrolet Cars & Trucks

1 Answer

P1336 trouble code ho to solve problem


P1336 Ford P1336 Ford - Crankshaft Position Or Camshaft Position Sensor Input Signal Error Share
0 ' Add Comment Possible causes
- Faulty Crankshaft Position Sensor
- Faulty Camshaft Position Sensor
- Crankshaft Position Sensor harness is open or shorted
- Crankshaft Position Sensor circuit poor electrical connection
- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
What does this mean? When is the code detected?
The Engine Control Module (ECM) has detected a synchronization or signal error from the cam or crank sensors
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall
- Engine difficult to start
P1336 Ford Description
The input signal to the powertrain control module (PCM) from the crankshaft position (CKP) sensor or the camshaft position (CMP) sensor is erratic.

Read more: http://www.engine-codes.com/p1336_ford.html#ixzz3qT9Hiztc

Nov 03, 2015 | 2005 Ford Freestyle

1 Answer

2002 jeep grand cherokee diagnostic trouble code P 0320? how do i repair?


No Crank Reference Signal at PCM No reference signal (crank-shaft position sensor) detected during engine cranking. Use this youtube step-by-step to fix it. How to diagnose P0320 crankshaft position sensor circuit failure

May 01, 2014 | 2002 Jeep Grand Cherokee

2 Answers

Eng starts hard,runs good until the rpm is over 2200 then it stumbles my input voltage on the cam sensor is 5volts ,on most cars i've read should have 8volts where


Both crank and cam sensors have a 8 volt reference I have found the wiring melted together where it cross over transmission shorting out the signal. also test your reference voltage at the computer with circuit unplugged at sensor watch meter and wiggle wiring going back to computer this will help find faulty area.

Nov 07, 2013 | 2005 Chrysler Sebring Conv

1 Answer

If a trouble code on a 2000 vw shows speed sensor and the test comes out good what is the problem


engine speed sensor could be faulty.engine speed sensor provides the ECM with a crankshaft position signal.the ECM uses the signal to determine a crankshaft reference point top dead center and calculate engine speed. engine speed sensor like the crankshaft position sensor.if sensor faulty fuel system wont work. a bad engine coolant temperature sensor will cause engine shut off when hot.

Jul 28, 2013 | Cars & Trucks

2 Answers

Code 11. what do i check?


11 camshaft signal or ignition signal, no reference signal during cranking
If you replace the CKP sensor (crankshaft position) you will more than likely cure the problem, I'll assume you have an intermittent engine stall out or hard not start?

Nov 03, 2011 | 1995 Dodge Neon

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.

Jan 07, 2010 | 1998 Jeep Wrangler

1 Answer

I am trying to test the crank sensor on my 99 intrepid and need to know how to test


No-Start Diagnosis
The diagnostic procedure for EI (electronic ignition) systems varies depending on the vehicle make and model year. Always follow the procedure recommended in the vehicle manufacturer's service manual.
The following procedure is based on Chrysler EI systems. The crankshaft timing sensor and camshaft reference sensor in these systems are modified Hall-effect switches.
If a crank or cam sensor fails, the engine will not start. both of these sensor circuits can be checked with a voltmeter or lab scope.
If the sensors are receiving the correct amount of voltage and have good low-resistance ground circuits, their output should be a pulsing digital signal or voltmeter reading while the engine is cranking.
If any of these conditions do not exist, the circuit needs to be repaired or the sensor needs to be replaced. When the engine fails to start, follow these steps:
  1. Check for fault codes 11 and 43.
    • Code 11, "Ignition Reference Signal," could be caused by a defective camshaft reference signal or crankshaft timing sensor signal.
    • Code 43 is caused by low primary current in coil number 1, 2 or 3.
  2. With the engine cranking, check the voltage from the orange wire to ground on the crankshaft timing sensor and the camshaft reference sensor. fr_24.13.gif Crankshaft timing and camshaft reference sensor terminals.
    • Over 7V is satisfactory.
    • If the voltage is less than specified, repeat the test with the voltmeter connected from PCM (powertrain control module) terminal 7 to ground.
    • If the voltage is satisfactory at terminal 7 but low at the sensor orange wire, repair the open circuit or high resistance in the orange wire.
    • If the voltage is low at terminal 7, the PCM may need replacement.
      • Be sure 12V are supplied to the PCM terminal 3 with the ignition switch off or on, and 12 V must be supplied to PCM terminal 9 with the ignition switch on.
      • Check PCM ground connections on terminals 11 and 12 before PCM replacement.
  3. With the ignition switch on, check the voltage drop across the ground circuit (black/light blue wire) on the crankshaft timing sensor and the camshaft reference sensor.
    • A reading below 0.2V is satisfactory.
NOTE When using a digital voltmeter to check a crankshaft or camshaft sensor signal, crank the engine a very small amount at a time and observe the voltmeter. The voltmeter reading should cycle from almost 0 volts to a highter voltage of about 5 volts. Since digital voltmeters do not react instantly, it is difficult to see the change in voltmeter reading if the engine is cranked continually.
  1. If the readings in the previous two steps are satisfactory, connect a lab scope or digital voltmeter from the gray/black wire on the crankshaft timing sensor and the tan/yellow wire on the camshaft reference sensor to ground. fr_24.14.gif Lab scope patterns from the camshaft and crankshaft position sensors.
    • When the engine is cranking, a digital pattern should be displayed or the voltmeter should cycle between 0 and 5 volts.
    • If the voltage does not cycle, sensor replacement is required.
    • Each sensor voltage signal should cycle from low voltage to high voltage as the engine is cranked.
A no-start condition can occur if the PCM "locks up."
  • In step 2 above, if 0 volts is indicated the PCM may be faulty or it may be locked up.
  • If the PCM is locked up it will not store a fault code for the reason.
  • Basically, the PCM will lock up when it goes into a safeguard routine if the 9-volt or 5-volt reference voltage shorts to ground. This shuts down the PCM to protect it. Since it shuts down, no DTCs (Diagnostic trouble code) are stored.
  • The engine will not start as long as the ground is present. An intermittent ground will cause the engine to stop running.
  • Attempting to restart the engine without cycling the ignition switch to the full LOCK position will not start the engine, even if the ground is lifted.
    • Cycle the ignition switch to the LOCK position and wait about 5 to 10 seconds.
    • If the ground is lifted, the PCM will reset and the engine will start and run until the ground occurs again.
  • On 1996 and new SBEC III and JTEC engine controllers, there are two 5-volt reference signals. The sensors that require 5 volts are separated, thus If this signal shorts to ground the engine will still stop running, but for the first time a DTC can be set.
  • Also note, if the 9-volt reference voltage is opened, there will be no DTC stored for the crankshaft or camshaft positions sensors. With an open circuit the PCM cannot tell if the engine is cranking or not. The diagnostic routing does not begin until the PCM senses engine cranking.

Nov 10, 2009 | 1999 Dodge Intrepid

1 Answer

Check Engine Light


Your diagnostic about this CODE is:

Generic P-Code DRB Scan Tool Display Brief Description of DTC
P0171 (M) 1/1 Fuel System Lean A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
P0320 (M) No Crank Reference Signal at PCM No reference signal (crankshaft position sensor) detected during engine cranking. P0320 (M) No RPM Signal to PCM (Crankshaft Position Sensor Signal to JTEC) A CKP signal has not been detected at th
For more details, you can visit the obd_dtc_jeep

Good luck, and rated this help.

Aug 11, 2009 | 1997 Jeep Grand Cherokee

1 Answer

Engine keeps missing. unknown codes


Code 1682 indicates low battery voltage. This could be a problematic alternator, which would likely cause misfiring. Autozone should be able to check this for you for free.

Code 1391 indicates the computer can not see the crank or cam sensor signal. This would likely be a result of the misfires.

Code 0320 indicates the crankshaft position sensor reference signal could not be found while the engine is cranking.

All of these issues point to either a cam/crank sensor malfunction or a charging system problem, either or both of which could cause the misfiring.

May 09, 2009 | 1998 Jeep Wrangler

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