W204 5WK44739

[Perryking]

Hi, I need repair this fault code. Always have B009012 front left sensor, shortcircuit to positive. Both front sensors are new and genuine, I cleared crash on ecu, also customer buy brand new airbag unit and same fault. We check wiring, all perfect. I can use front left sensor to right sensor and work, so is not sensor.

Please any solution? Here files from original ecu with crash and clear

[rafal]

test this one....................

[fuzz1]

Hi
Why would a repair ECU work when a new didn't? Makes no sense.
Is the fault intermittent? Makes more sense that wiring wrongly diagnosed

[alex2019]

you have to make sure the left sensor wiring is fine, means it didn't switched the ground to positive , then check with multitester if the wires short or not

[Sandeepa]

Hi buddy
The srs has not much components attached, so wiring can easily be diagnosed by temporarily disconnecting the couplers from the oem wiring bunch. Try with a make shift external wire directly connecting the sensors with the module and check out. There will be joints then but atleast you can solve the problem.
Thanks

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[Sandeepa]

Hi buddy
If you have tried everything then the problem might be with the module only. Try switching the module from another car or this module in other car.
If you have solved it, then please update.
Thanks

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