Code B1A28 ecm mismach with skim - 2007 Dodge Charger Daytona R/T Sedan

The skim module under the steering column is not sending the transponder code from your key to the engine computer. There are a couple of possible fixes...
Replace the faulty skim module and have the keys resynced with the vehicle. (expensive dealer) or...
You can remove the skim module, Order a new rebuilt engine computer, the ECM, and install it. Do not install the SKIM back in the car. The ECM should be programmed with your vin number from the rebuilder (many good ones online and on ebay) and install it in the car. Start with your key. The Security light will flash and eventually go out. Sometimes the security light does not go out but the car will continue to run normally. Send back your old computer. Problem solved permanently. You will no longer need a transponder key to start your car.
YOu can use all the dummy keys you can buy in walmart.
You will dance and sing FREE FREE from the chains of $200 dollar keys LOL.
Enjoy.

Wiring, schematic, electrical diagrams, fuse diag, error codes etc are basic contents of these online books they have here on this website www.reliable-store.com I have attached. Must check it out

Begin with the basics........
Check engine lamp illuminated ??
Scan,code(s) stored ??

If you need further help, reach me via phone at https://www.6ya.com/expert/ralph_2f0886b7d6af32ce

you are swapping PCM's that be real bad.
on newer cars with Security this causes it to think your are a thief
and bricks the PCM (skim rules 101)
"until the pcm use in another jeep" huh?
SKIM is Phissed off.
http://www.jeepforum.com/forum/f9/trouble-code-p1686-905620/

That code is an invalid key code and it will cut power to the fuel pump, possibly a bad key or bad win module

on the dash cluster display, sure.
these are not good codes to get..
what is best is the use a real OBD2 scan tool , and for sure
one the reads extended chrysler codes.
first U110a
U110A is a steering column control module lost communication
if you want to read the FSM on these codes, you can
and do all the tests it states there, to find true cause.
do you, , if not get the car scanned by a mechanic and diagnosed.
B1A28-ECM Mismatch With Skim 126. lost comms with steering angle sensor
141 lost comms with TIPM
151 lost comes with occupant restraint system.

the B1a28 is very serious. or just a loose connector.
the ECM and SKIM say the VIN number is lost. or was garbled
in the comm.s (noise)

great question, wana Read the shop manual for free, ?
it answers all this, its a rolling encrypted secret code.
bad idea
says it all, YOU DID.
now the system sees you hacking,
and bricks it.
there is only 1 fix. dealer time. or a shop with same tools.

they must be all married or they self brick
its also law here in use, DOT bs, rules.
not jeeps fault < GOV BS.

page 8e-1 , on, read. in jeep SM.

When a PCM (JTEC) and the SKIM are replaced
at the same time, perform the following steps in
order:
(1) Program the new PCM (JTEC).
(2) Program the new SKIM.
(3) Replace all ignition keys and program them to
the new SKIM.
PROGRAMMING THE PCM (JTEC)
The SKIS Secret Key is an ID code that is unique
to each SKIM. This code is programmed and stored
in the SKIM, the PCM, and the ignition key transponder
chip(s). When replacing the PCM, it is necessary
to program the secret key into the new PCM
using the DRBIIIt scan tool. Perform the following
steps to program the secret key into the PCM.
(1) Turn the ignition switch to the On position
(transmission in Park/Neutral).
(2) Use the DRBIIIt and select THEFT ALARM,
SKIM, then MISCELLANEOUS.
(3) Select PCM REPLACED (GAS ENGINE).
(4) Enter secured access mode by entering the
vehicle four-digit PIN.
(5) Select ENTER to update PCM VIN.
NOTE: If three attempts are made to enter secured
access mode using an incorrect PIN, secured
access mode will be locked out for one hour. To
exit this lockout mode, turn the ignition switch to
the ON position for one hour, then enter the correct
PIN. (Ensure all accessories are turned off. Also
monitor the battery state and connect a battery
charger if necessary).
(6) Press ENTER to transfer the secret key (the
SKIM will send the secret key to the PCM).

(7) Press PAGE BACK to get to the Select System
menu and select ENGINE, MISCELLANEOUS, and
SRI MEMORY CHECK.
(8) The DRBIIIt will ask, “Is odometer reading
between XX and XX?” Select the YES or NO button
on the DRBIIIt. If NO is selected, the DRBIIIt will
read, “Enter Odometer Reading (From I.P. odometer)”.
Enter the odometer reading from the instrument
cluster and press ENTER.
PROGRAMMING THE SKIM
(1) Turn the ignition switch to the On position
(transmission in Park/Neutral).
(2) Use the DRBIIIt and select THEFT ALARM,
SKIM, then MISCELLANEOUS.
(3) Select PCM REPLACED (GAS ENGINE).
(4) Program the vehicle four-digit PIN into SKIM.
(5) Select COUNTRY CODE and enter the correct
country.
NOTE: Be sure to enter the correct country code. If
the incorrect country code is programmed into
SKIM, it cannot be changed and the SKIM must be
replaced.
(6) Select YES to update VIN (the SKIM will learn
the VIN from the PCM).
(7) Press ENTER to transfer the secret key (the
PCM will send the secret key to the SKIM).
(8) Program ignition keys to the SKIM.
NOTE: If the PCM and the SKIM are replaced at the
same time, all vehicle ignition keys will need to be
replaced and programmed to the new SKIM.
PROGRAMMING IGNITION KEYS TO THE SKIM
(1) Turn the ignition switch to the On position
(transmission in Park/Neutral).
(2) Use the DRBIIIt and select THEFT ALARM,
SKIM, then MISCELLANEOUS.
(3) Select PROGRAM IGNITION KEY’S.
(4) Enter secured access mode by entering the
vehicle four-digit PIN.
NOTE: A maximum of eight keys can be learned to
each SKIM. Once a key is learned to a SKIM it (the
key) cannot be transferred to another vehicle.
(5) Obtain ignition keys to be programmed from
the customer (8 keys maximum).
(6) Using the DRBIIIt, erase all ignition keys by
selecting MISCELLANEOUS, and ERASE ALL CURRENT
IGN. KEYS.
(7) Program all of the ignition keys.
If ignition key programming is unsuccessful, the
DRBIIIt will display one of the following messages:
² Programming Not Attempted - The DRBIIIt
attempts to read the programmed key status and
there are no keys programmed into SKIM memory.
² Programming Key Failed (Possible Used
Key From Wrong Vehicle) - SKIM is unable to program
an ignition key transponder due to one of the
following:
² The ignition key transponder is faulty.
² The ignition key transponder is or has been
already programmed to another vehicle.
² 8 Keys Already Learned, Programming Not
Done - The SKIM transponder ID memory is full.
² Learned Key In Ignition - The ID for the ignition
key transponder currently in the ignition lock
cylinder is already programmed in SKIM memory.
end quote.

You do have a factory secuity system, and the used ignition lock is the problem, instyall the original lock into the used column.

DTC P0702 - Transmission Control System Electrical
There is a code in the ****** control module and need to check harnesses and wiring, as first step.

DTC P1685 - Skim Invalid Key
Transponder ID (in ignition key) is monitored with ignition on. DTC will set if transponder ID read by Smart Key Immobilizer Module (SKIM) does not match any transponder ID's stored in SKIM memory. Possible Causes:
- Incorrect VIN In PCM
- Invalid SKIM Key Present
- No Communication With SKIM
- No VIN Programmed In The PCM
- PCM SKIM Trouble Codes Set

I would suggest clearing all these codes, and drive it until the problem arises again, or the check engine light comes on, and then check for codes again. To clear the codes you will need to remove the negative battery cable, and touch it to the positive cable, for about 15 seconds. Then re hook and all the modules will be reset. If this isnt work, visit your Trans Service.

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That is a code for an invalid skim key. If you have another skim key try it. If it does the same thing then the skim module may be bad.