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ABS Light

#442953
dreamer2355dreamer2355
Participant

    Any type of ‘U’ codes are CAN Bus network errors. You will need some serviced information and flow testing charts to diagnose those codes.

    I would not assume the ABS module is bad. It code be a wiring issue depending on how the system is wired and the type of network used.

    If both banks are running lean, i would take a look at fuel pressure first and compare against factory specifications.

    I would also be checking for vacuum leaks around the lower intake manifold and after the MAF sensor.

    Having access to a scan tool that shows PID data particularly for fuel trims, o2 readings and MAF readings would be very helpful.

    Also with a bi-direction scan tool you could activate the IACV and see what response you receive.

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