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Discussion Starter #1 (Edited)
Hi charger threw a cel code this morning. Code is P1622. Googled and its a cylinder select problem. Sounds bad? Anyone else get this code before?




2014 phantom black rt max
 

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Hi charger threw a cel code this morning. Code is P1622. Googled and its a cylinder select problem. Sounds bad? Anyone else get this code before?

2014 phantom black rt max
Actually it means that the 5V Output Reference Voltage 2.

That code is for O2 sensor 1/1 and 2/1....Looks like the return voltage back to the PCM on those sensors is spliced into one pin at the PCM.

To set the DTC the PCM has to see reference voltage above 3.7 for more than 9 sec. Possible causes are, Open or Short in return circuit to PCM, Oxygen Sensor or PCM. 1/1 is sensor 1 bank 1---2/1 is sensor 2 bank 1. Bank 1 will be the drivers side. Check the sensor before the cat. and after the cat. on that side.;)

Regards,
Brian
BND Automotive LLC:driving:
440-821-9040
www.bndautomotive.com
 

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Discussion Starter #3
Ok thanks Brian! Will check it out.


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Hmm drove to work this morning then drove over to a restaurant for dinner tonight. Check engine light was gone when I started up the car to go home after dinner. I'll keep an eye on it. Seems weird that the code pulled up I didn't do anything different but fill up last night.

Hopefully everything is ok.


2014 phantom black rt max
 

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Hmm drove to work this morning then drove over to a restaurant for dinner tonight. Check engine light was gone when I started up the car to go home after dinner. I'll keep an eye on it. Seems weird that the code pulled up I didn't do anything different but fill up last night.

Hopefully everything is ok.


2014 phantom black rt max
It's not unusual for an O2 sensor going bad to throw intermittent codes like that. Our '05 Grand Caravan did that for several weeks before the CEL lit steadily.

I suspect you have a sensor failing and it's just a matter of time before it's toast. No worries though, it won't cause any damage and once it's throwing a constant code, you can get it replaced.
 
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Discussion Starter #6
It's not unusual for an O2 sensor going bad to throw intermittent codes like that. Our '05 Grand Caravan did that for several weeks before the CEL lit steadily.



I suspect you have a sensor failing and it's just a matter of time before it's toast. No worries though, it won't cause any damage and once it's throwing a constant code, you can get it replaced.


Ok that is good to know its not a huge deal. Thanks!



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Hi charger threw a cel code this morning. Code is P1622. Googled and its a cylinder select problem. Sounds bad? Anyone else get this code before?




2014 phantom black rt max
There is a technical service bulletin 18-039-13 possibly related to your concern. Have your servicing dealer inspect and diagnose issue.

SUBJECT:
Flash: MIL Illumination P1621- O2 Sensor Reference Voltage Circuit Low or P1622- O2
Sensor Reference Voltage Circuit High
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with new software.
MODELS:
2014 (LC) Challenger
2014 (LX) 300
2014 (LD) Charger
NOTE: This bulletin applies to vehicles equipped with a 5.7L engine (sales code
EZH) or a 5.7L engine (sales code EZC) built on or before September 4, 2013
(MDH 0904XX).
SYMPTOM/CONDITION:
A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set:
· P1621 - O2 Sensor Reference Voltage Circuit Low
· P1622 - O2 Sensor Reference Voltage Circuit High
 

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Discussion Starter #9
Hey Gates did you ever resolve this issue? My '14 Ram has P1621 and P1622. Logging shows neither front O2's are responding. Thanks!
Hey there. This issue eventually went away the next day on its own. I think the problem ended up being that the night before I filled up my tank very full and then topped it off with fuel additive. The code only came up once. After driving that day and using some fuel the code didn't come on again the next day and it hasn't popped up since. Now I only fill up till first click and then add my fuel additive. No issues with that.
 

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Hey there. This issue eventually went away the next day on its own. I think the problem ended up being that the night before I filled up my tank very full and then topped it off with fuel additive. The code only came up once. After driving that day and using some fuel the code didn't come on again the next day and it hasn't popped up since. Now I only fill up till first click and then add my fuel additive. No issues with that.
Strangely enough my CEL went out 2 days later. Gremlins I tell ya.
 
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