2011 Buick LaCrosse CXL Logo
Posted on May 18, 2014
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What does error codes: B0100 and B0140 indicate wrong on a 2011 Buick LaCrosse CXL 3.6 V6 eng.?

What does the codes B0100 and B0140 mean when the ABS and Trac off lights came on and what do I have to do to correct the errors?

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Bruce Augustine

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  • Posted on May 18, 2014
Bruce Augustine
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B0100:
Perform trouble checking for the following: the front end sensor, the SDM module, the SDM wiring harness connector. Damage to the following parts needs replacement or repair. For the DTC B0100, detach the front end sensor1 connector and also detach the SDM connector. Perform trouble checking of the signal and voltage circuits between the SDM and the front end sensor for a short to voltage and for a short to ground. Reconnect all the SIR components and if the DTC B0100 is present then the front end sensor1 has to be changed.
B0104
Perform trouble checking for the following: the front end sensor, the SDM module, the SDM wiring harness connector. Damage to the following parts needs replacement or repair. For the DTC B0104, detach the front end sensor1 connector and also detach the SDM connector. Perform trouble checking of the signal and voltage circuits between the SDM and the front end sensor for a short to voltage and for a short to ground. Reconnect all the SIR components and if the DTC B0104 is present then the front end sensor2/right has to be changed.
i could not find anything on the B0140 code so i included the B0104 incase of typo

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