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Thread: Help needed - ‘restricted performance’

  1. #1
    Join Date
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    Help needed - ‘restricted performance’

    All, have just been hit with the red triangle of ‘restricted performance’ whilst en route with family and trailer in tow, to tip of Cape York. Currently just south of Townsville. Have read fault codes using GAP IID tool and cannot clear faults. Appreciate any assistance on how to clear fault or repair issue. Land Rover mechanics not available today.
    Thanks in anticipation. Andrew

    Codes listed below:


    VIN: SALLAAAF5EA718920
    L319 - Discovery 4 2014
    Vehicle scanned on 02-07-2022 10:50
    Using IIDTool BT V3.0 B2643

    ACM-Audio System

    B119F-13 (2F) GPS antenna - General electrical failure - circuit open
    BCM-Body Control

    U201B-54 (2F) Control module calibration data 2 - System programming failure - missing calibration
    ( on 02-07-2022 10:49:09 at 130256 km )
    IPMB-Camera

    U0140-08 (2C) Lost communication with body control module - General failure information - bus signal/message failure
    ( on 13-02-2028 19:12:53 at 208 km )
    PCM-Engine Diesel 3.0L

    P010D-00 (27) Mass or volume air flow B - circuit high
    ( on 02-07-2022 10:43:39 at 130256 km )

  2. #2
    Join Date
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    My suggestion would be check the mass airflow sensors…A and B circuits (B is closer to front of the vehicle)…Powerfull UK (a YouTube channel have a video on this)

    Land Rover 3.0 SDV6 / TDV6 MAF Air Mass Temperature problems, Testing & Fixing - YouTube

  3. #3
    Join Date
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    Swap the 2 MAFs then see if the fault stays as B or is now A.
    Ensure that you have pending faults enabled in your IIDtool to see all faults.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

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