OBDSTAR DC706 Cannot Read VAG EDC17CP14 Solution

 OBDSTAR DC706 programmer won’t connect to VW Bosch edc17cp14 ECU on bench mode (shown as image below)?

Possible reason and solution:

1.

Some people use the power supply that came with DC706 to connect ECU. That’s incorrect.
The power supply only used to charge the DC706 tablet. Requires an extra better power supply 5amp.

For BENCH & BOOT (workbench) operation, please use a reliable high-power DC regulated power supply (current not less than 5A) to power the ECU. OBDSTAR’s standard power adapter (current 2A) is only used for device charging and is not recommended for ECU. power supply, otherwise communication may fail due to low power of the power adapter!

 

2.

Make sure you bridge a 120 ohm resistor between CAN H and CAN L and try again.

If all fails, edc17cp14/cp20 sometimes have High TPROT and not possible on bench. Only boot.
You can remove TPROT, but you will need to do it BOOT mode first to get rid of TRPOT. Then you can go back to bench mode and make read when this is done.