Question about 2000 Jeep Cherokee

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Trouble codes P0340, P0622, P1388 - 2000 Jeep Cherokee

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  • Anonymous Sep 14, 2008

    these codes are showin up on mine p1388 ,p0320, p1685

  • Anonymous Apr 19, 2009

    p1388on jaguar 2002 3.0 liter

  • geyserblaste Apr 29, 2009

    last code was p1388 1998 dodge truck won`t start just turns over changed crankshaft sensor and cam sensor still won`t start also change the coil the relay checks out still no spark

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OK.. HI.

The codes you have they refer to:
P0340. No cam signal at the PCM
P0622. Generator field not switching properly. " Charging system"
P1388. Auto shutdown relay control circuit.

""""""""NOTE"""""""""
"" P0340" This code , cam sensor make the car long start or not start, conditions.

Posted on Jul 03, 2008

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2 Answers

Code P0340.


camshaft position sensor circuit malfunction---check the connection and wiring around and to the sensor the following link can assist you with the trouble shooting
http://www.obd-codes.com/p0340 P0340 Camshaft Position Sensor Circuit Malfunction http://www.myautorepairadvice.com/p0340.html

Aug 19, 2016 | Cars & Trucks

1 Answer

Code P1388 and P1399


P1388 JEEP - ASD or CNG (compressed Gas) Relay Control Circuit Possible causes - Faulty ASD Relay (most common cause)
- Faulty CNG Relay
- ASD or CNG Relay harness is open or shorted
- ASD or CNG Relay circuit poor electrical connection
- ASD or CNG Relay poor ground or supply voltage condition

P1399 is a related to the P1388 failure.

Jun 27, 2016 | 2000 Jeep Grand Cherokee

1 Answer

P1388 code present


P1388 OBD-II Trouble Code references Variable Cam Timing Overretarded Bank 2, that is the most common definition for the P1388..

Feb 10, 2016 | Mahindra Scorpio Cars & Trucks

1 Answer

How to fix a code p0622


code p0622 refers to alternator ,field control-circuit malfunction causes--wiring ---alternator---battery---ECM. I would have the battery load tested first to check for loose for terminals and failing cells. Then check that the plug in the back of the alternator is tight

Jul 15, 2013 | 2005 Dodge Neon SXT

1 Answer

P1388 code


P1388 -Auto ShutDown (ASD) relay control circuit

Oct 25, 2012 | 1998 Dodge Caravan

1 Answer

Pcm code 1388


P1388 Variable Cam Timing Overretarded (Bank #2)

Jaguar issued a Technical Service Bulletin related to this code ("Malfunction indicator lamp illuminated 3.0 l v6 false flagging of diagnostic trouble code P1383 or P1388"); reprogramming of the PCM should correct the problem

If your PCM already has been updated, then there is an issue with your variable valve timing system. It will need further diagnosis.

Aug 09, 2012 | 2000 Jaguar S-Type

1 Answer

What is code p0622


Hi there:


DTC P0622 - Generator Field Control Circuit
This is a trouble code relates to the charging system and means that the Powertrain Control Module is trying to control the generator field with no result during monitoring.


This problem could be caused:
- open/shorted within the field control circuit between the PCM and the alternator ( a brown/gray wire ),
- generator ground circuit (brown/black wire),
- generator itself, or
- faulty PCM.




Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

May 24, 2012 | 1998 Dodge Dakota

1 Answer

What does code p0622 mean


Hi there:


DTC P0622 - Generator Field Control Circuit
This is a trouble code relates to the charging system and means that the Powertrain Control Module is trying to control the generator field with no result during monitoring.


This problem could be caused:
- open/shorted within the field control circuit between the PCM and the alternator ( a brown/gray wire ),
- generator ground circuit (brown/black wire),
- generator itself, or
- faulty PCM.




Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

May 24, 2012 | 1998 Dodge Dakota

1 Answer

My 2001 Cherokee Country 4 litre petrol Auto keeps cutting out at any random moment, sometimes after a day, sometimes after 10 minute, or even after a week. The crank angle sensor has been replaced with no...


1388 is the auto shutdown relay. I'd check that first as if there is no signal coming from there it can disrupt other functions. 622 is a problem problem with the alternator field. check the wiring on the alternator and make sure there is continuity between the alt field and the computer. 340 is the pickup coil in the distributor (cam sensor) I'd check that last as it may read that way due to the asd relay problem. Best manual to use for electrical is chiltons.

Jun 03, 2010 | 2001 Jeep Cherokee

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