Peugeot 107 DTC B2799

[autorisp]

I'm in a nightmare.Peugetot 107 1KR, the motor starts for two seconds and off.
In immobox 0 errors, in the engine ECU only B2799 -> controller communications immo defective.
Made these tests:
​1. Test the Ecu Power ( Engine and immobox )
2. Test links Immobox -> Engine Ecu
12 to 78 ?
13 to 51
3. Test the two keys with Zed-> perfect Keys
4. Made several times Engine ECU -> immobox alignment
Made with PP2000,
done with PIN 4-13 EOBD
5. Vergin immobox unit.
Reprogrammed the two original keys > OK
Aligned engine ECU -> immobox.
6. Programmed engine control unit with different file (not virgin) and remade alignment.
Always the same defect, the motor starts and turns off after two seconds.
The engine switches off because the engine control unit inhibits the ignition and injection.
Always just B2799 error.
Can someone check if the two units are aligned?
Any ideas?

[Bllinda]

DTC

B2799

ENGINE IMMOBILISER SYSTEM
MALFUNCTION



CIRCUIT DESCRIPTION

This DTC is output when the ECM detects errors in communication between the transponder key ECU assy
and the ECM or in the communication lines.
This DTC is also output when an engine start is attempted while the ECU communication ID between the
transponder key ECU and the ECM are different.
Before troubleshooting for this DTC, make sure that there is no DTC detected in the transponder key ECU.
If there is a key code?related DTC detected in the transponder key ECU, repair it first.




DTC No.

DTC Detection Condition

Trouble Area



B2799


Error in communication between ECM and transponder
key ECU, and in communication line

Communication ID is different during communication with
transponder key ECU


Wire harness

Transponder key ECU assy

Transponder key amplifier

ECM



Good luck

[maniur83]

Try and report.

[autorisp]

Not work,
i think one of the ecu is fault. i search a kit and test.
Tanks

[kiszka]

.................

[autorisp]

Finally car started and work well.
I bougth another Engine ecu and immobilizer ecu ( not of the same car ).
Virginized immo with file attached,
with PP2000 programmed original keys,
made syncro between two ecu and
car started.

[lion0304]

Finally car started and work well.
I bougth another Engine ecu and immobilizer ecu ( not of the same car ).
Virginized immo with file attached,
with PP2000 programmed original keys,
made syncro between two ecu and
car started.

If you use Tag Key Tool, you can add orginal key in the dump and start car at once.

No need virgin Immobox, program keys and sync.

[ziko]

Is this means wiring was ok,maybe immo ir ecu was defected ,I have same situation, send matched dumps to my mail,as someone told you need only to add key not to virginize immo