2063954.4
Service Bulletin Details
Public Details for: 2063954.4
Engine warning light illuminated within the dip during acceleration - dtc P029900 evident - w12 tsi only customer statement: -engine warning light and (max engine speed 4000 rpm) warning evident within the dip during acceleration - warnin
- 2023 - 2022 - 2021 - 2020 - 2019 - 2018 - 2017 -
Models from 2023
2023 BENTLEY BENTAYGA |
2023 BENTLEY CONTINENTAL GT |
2023 BENTLEY CONTINENTAL GTC |
2023 BENTLEY FLYING SPUR |
Models from 2022
2022 BENTLEY BENTAYGA |
2022 BENTLEY CONTINENTAL GT |
2022 BENTLEY CONTINENTAL GTC |
2022 BENTLEY FLYING SPUR |
Models from 2021
2021 BENTLEY BENTAYGA |
2021 BENTLEY CONTINENTAL GT |
2021 BENTLEY CONTINENTAL GTC |
2021 BENTLEY FLYING SPUR |
Models from 2020
2020 BENTLEY BENTAYGA |
2020 BENTLEY CONTINENTAL GT |
2020 BENTLEY CONTINENTAL GTC |
2020 BENTLEY FLYING SPUR |
Models from 2018
2018 BENTLEY BENTAYGA |
2018 BENTLEY CONTINENTAL GT |
Models from 2017
2017 BENTLEY BENTAYGA |
Technical product information Engine warning light illuminated within the DIP during acceleration - DTC P029900 evident - W12 TSI only Russische Föderation (5RU),Australia E04 Bentley rest Asia and Australia (6E04),China 796 VW Import Comp. Ltd (Vico), Beijing (6796),Germany E02 Bentley rest Europe (6E02),Japan E03 Bentley Japan (6E03),Korea, (South) E08 Bentley South Korea (6E08),United Arab Emirates E06 Bentley Middle East and Africa (6E06),United Kingdom E01 Bentley UK (6E01),United States E05 Bentley USA and rest America (6E05) Bentley Topic Market area Brand Transaction 2063954/4 No. Level EH Status Approval Release date Event memory entries Diagnostic address 0011 - Engine Electronics 2 0001 - Engine electronics 0011 - Engine Electronics 2 0001 - Engine electronics Event memory entry P029900: Turbo/Super P029900: Turbo/Super P029900: Turbo/Super P029900: Turbo/Super Charger Underboost Charger Underboost Charger Underboost Charger Underboost Fault type Fault status Intermittent Intermittent static static New customer code Object of complaint engine -> operation, engine control engine -> engine operation engine -> operation, engine control -> engine control unit engine -> engine operation -> power development -> engine power information, navigation, communication, entertainment -> symbolic fault indicators -> emission control system fault indicator engine -> engine operation -> engine refinement -> engine limp-home mode Vehicle data New Continental GT/GTC - New Flying Spur, Bentayga - W12 TSI Sales types Type 3S31BB 3S31BB 3S31BB 3S31BB 3S31BB 3S31BB 3S31EB 3S31EB 3S31EB 3S41BB 3S41BB 3S41BB 3S41BB 3S41BB 3S41EB 3S41EB 3S41EB 4V14A9 4V14A9 INTERNAL MY 2018 2019 2020 2021 2022 2023 2021 2022 2023 2019 2020 2021 2022 2023 2021 2022 2023 2017 2018 Brand Designation Engine code Gearbox code Final drive code E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * Complaint type Position functionality functionality control units, services -> error message dimensional accuracy -> too low functionality -> activates functionality -> does not end 4V14A9 4V14A9 4V14A9 4V14A9 4V14A9 4V14G9 4V14G9 4V14G9 4V14G9 ZG21BB ZG21BB ZG21BB ZG21BB ZG26BB 2019 2020 2021 2022 2023 2020 2021 2022 2023 2020 2021 2022 2023 2023 E E E E E E E E E E E E E E Documents Document name master.xml INTERNAL * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Technical product information Engine warning light illuminated within the DIP during acceleration - DTC P029900 evident - W12 TSI only Transaction No.: 2063954/4 Customer statement / workshop findings Customer statement: Engine warning light and ‘max engine speed 4000 rpm’ warning evident within the DIP during acceleration - Warning on DIP first appears when accelerating (During boost) Workshop findings: • DTC P029900 evident within the engine control unit/s In the event the afore mentioned symptoms are evident the operative should refer to the onward instructions Technical background One of the turbochargers may not be achieving full boost, the issue can be related to a poor connection between the applicable boost pressure valve vacuum solenoid and the signal wire to the applicable Engine Control Module (ECM) leading to a lack of vacuum supplied to the wastegate when under load Or A kinked/damaged hose within the engine vacuum system TIP: The operative should also refer to Rep.Gr 21 - Boost pressure valve vacuum solenoid (To assist identifying the component location) Production change Not applicable Measure When required two operatives are required: x1 operative to drive the vehicle x1 operative to monitor test equipment 1) Referring to Figure 1 - Monitor the following MWB’s on Bank 1 and 2 • Normed load value IDE00085 • Engine RPM IDE00021 • Air Mass specified/Actual IDE00347/00350 • Charge air pressure specified actual IDE00190/00191 • Turbocharger speed sensor 1 IDE03770 • Intake manifold pressure specified/actual IDE04409/04410 2) Compare the values of each MWB between Bank 1 and 2 INTERNAL Figure 1 3) Carry out a visual inspection of the engine vacuum system TIP: Referring to the example shown in Figure 2, Check there are no kinks or damaged vacuum hoses NOTE: The issue shown in Figure 2 is an example of a kinked vacuum hose which is fitted to the Boost pressure valve vacuum solenoid Figure 2 4) Referring to Figure 3 - Attach a manual vacuum gauge (B) between the following components: (Depending on the bank which is suspected to be at fault) • Turbocharger wastegate (A) and (C) Boost pressure valve vacuum solenoid N249 (Bank1) Or N547 (Bank 2) NOTE: Point (D) refers to the engine vacuum system The manual vacuum gauge must be connected as shown, the hose must be long enough to allow the gauge/readings to be viewed from inside the cabin INTERNAL Figure 3 4) The vehicle should be driven whilst the second operative monitors the gauge to confirm if the Boost pressure valve vacuum solenoid is being actuated in a plausible manner For example: Vacuum supplied to build boost pressure/vacuum supply closed when the target boost pressure is achieved If vacuum supply to the wastegate is not plausible the operative must check the vacuum supply to the Boost pressure valve vacuum solenoid 5) Carry out a wiring integrity check between the applicable ECM and the applicable solenoid circuit - Refer to the applicable Rep.Gr wiring diagram • Figure 4 shows a location which should also be checked for damage/kinks NOTE: The disconnected pin is shown for photographic purposes only Figure 4 7) In the event an issue is suspected, for test purposes the operative should overlay the suspected wiring as follows: • Make and temporarily fit an overlay wire between the applicable boost pressure valve vacuum solenoid and the signal wire to the applicable Engine Control Module (ECM) • Attempt to erase the DTC and carry out a road test to confirm the issue has been successfully diagnosed • The overlay MUST not be left in place under any circumstances, the operative should repair the wiring as per Rep.Gr 97 INTERNAL Warranty accounting instructions Diagnosis time Warranty type 110 or 910 Labour operation code 97 09 01 00 Damage service number 97 09 Damage code 00 26 Time Must not exceed 120 TU Road test Labour operation code 01 21 00 00 Time 50 TU INTERNAL