Question about 2005 Dodge Neon SXT

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How to fix a code p0622

Changed the battery and alternator and a code p0622 code comes up and the car wont run right and the battery light is still on

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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

Posted on Jul 15, 2013

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Tap the alternator whith 2x4 seems to be all set now?? brushes??

Posted on Feb 18, 2017


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Posted on Jan 02, 2017

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SOURCE: alternator tests good wont charge battery

I'm sorry to say it could be the computer.
The computer controls idle speed as well as alternator output.
If the check engine light is on you should get it scanned for trouble codes.

Posted on Dec 18, 2012

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SOURCE: battery being draind

No, no this is an generator field circuit problem, check it!

Posted on Jun 18, 2008

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SOURCE: battery being draind

I have researched these codes, you must have some kind of issue with the alternator, did you test it with a load bank that pulls max amps from system? I suspect either the connectors to the alternator are loose or the alternator has a bad diode in the rectifier bridge circuit, have it tested again, kragen does it for free as well as others.

Posted on Oct 09, 2008

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SOURCE: changed battery,alternator and PCM and still wont

When the car is off battery voltage should be about 12.5 volts. When the car is on it should be just below 14 but more than 13. If it is then voltage sensing circuit is lying to you. If not then you must check all connections from battery to alternator and starter. When the car is off, does it drain the battery? If so, something other than radio and computer is using power. Electrical troubleshooting can be very complex are you familiar a DVM? (digital volt multimeter) If not you may decide this is too much for a do it yourselfer. You could damage all the electrical system if not careful.

Posted on Mar 04, 2010

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SOURCE: how can i fix this code :P0622, 1999 dodge intrepid

alternator my friend

Posted on Jun 11, 2012

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How to fix P0622 code

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Generator field F control circuit malfunction

Sep 26, 2015 | 2007 Pontiac Torrent AWD

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The battery is not charging and is bringing up codes P0621 and P0622 indicating a generator field circuit problem. Is this fixable? What do I do?

The alternator is fielded/grounded by the PCM. You need wiring schematics. Check continuity between the alternator and PCM for the field wire. If it is good, the PCM has lost the ground for the alternator(if not, fix or run a new wire). You can fix it two ways. First replace the PCM and have it programmed to the car. This cost money and it will turn the battery light off. Second, is to cut the field wire close( give yourself room to work) to the alternator, add wire to it and ground it to the engine(making sure the engine has a ground strap to the body). This may or may not turn the battery light off. But it will charge the battery.

May 21, 2015 | 2002 Oldsmobile Alero

1 Answer

I have an 2002 Cavalier Z24. I recently brought it in for repairs. The Technician replaced the ECM/PCM and it's still acting the same way....the alternator just won't charge the battery. it's a new battery...

Hey Joe , The first thing to do would be check for battery voltage on the heavier gage wire on the back of the alternator , if there is no voltage here there is a open circuit ! Which means the fusible link fried . This wire comes from the starter ! This charging system is controlled by the PCM , but they are rarely the problem . Do you have the charge indicator lit on the dash ? Do you have a check engine light on ? This system can set DTC'S - diagnostic trouble codes !
DTC B1328 DTC P0562 DTC P0563 DTC P0621 DTC P0622

Mar 25, 2015 | 2002 Chevrolet Cavalier Coupe

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2001 Dodge Intrepid- What does P0622= Generator F-term. Field F control, and P0403= EGR flow circuit malfuntion mean? Thank you

If you've replaced those parts according to the codes, you need to have the codes cleared from the computer, otherwise the car will think you still have the bad parts on, and stay in what they call Limp Mode! Sometimes you can take it to an Autozone, and they can clear it for you! Otherwise you need to have a shop clear those computer codes for you!

Apr 18, 2014 | 2001 Dodge Intrepid

1 Answer

P1684, P0622, P0403, P0134. These are the codes that I got from my scanner, what do they mean? Thank you

My guess is you may have wired something up wrong, or installed a faulty part. Either that or forgot to plug something back in while you were putting it back together. In other words replacing a battery and alternator shouldn't cause the oxygen sensor to go bad. So my suggestion is to check all plugs and wires to make absolutely certain everything is put back together correctly before you sink more money into fixing what's not broken. Haynes repair manuals list all the engine fault codes so for everyone else reading this, if you get codes check your manual or head to the library to look it up in theirs.

Apr 16, 2014 | 2001 Dodge Intrepid

1 Answer

B1676 - how do you reset this code?

check connections and look for a failed fuseable link wire..

Dec 27, 2013 | 2004 Mercury Sable

1 Answer

P0601, and p0622

P0622 is "Generator field 'F' control circuit malfunction"- your alternator has a circuit malfunction in the voltage regulator function. You need to have the charging system checked. It may be a wiring problem in the circuit to the alternator. A shop needs to test it out.
P0601 is "Internal control module memory check sum error"- I have no idea what that means, but is probably set because the charging system has a malfunction, and the result may be memory loss in the control module when the alternator acts up. Have the 0622 fixed, erase the codes, and see if the 0601 returns. That is what I would do, anyway.

Apr 28, 2013 | 2001 Dodge Dakota

1 Answer

Need to know what p0622 and p2503 diagnostic codes are. is this my battery? this is on an 2005 grand caravan

Sounds more like an alternator problem. Check output voltage of alternator, code P2503 indicates low voltage. Check/clean all connections at battery and alternator, as well as check all fuses/relays under hood in fuse relay box, just in case fuse blown as well. If all checks out good, you may need a new alternator.

Dec 20, 2009 | 2005 Dodge Caravan

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