2053348/5

Technical product information
Topic
Market area
Brand
Transaction No.
Level
Status
Release date
W12 Engine management light on - Turbocharger speed sensor DTC's stored
Bentley: worldwide (2WBE),Hongkong-Macau (5HK)
Bentley
2053348/5
EH
Approval
Event memory entries
Diagnostic address
Event memory entry
0001 - Engine electronics
0011 - Engine Electronics 2
0001 - Engine electronics
0011 - Engine Electronics 2
0001 - Engine electronics
0011 - Engine Electronics 2
P257900: Turbocharger Speed Sensor "A" Circuit
P257900: Turbocharger Speed Sensor "A" Circuit
P259400: Turbocharger Speed Sensor "B" Circuit
P259400: Turbocharger Speed Sensor "B" Circuit
P259500: Turbocharger Speed Sensor "B" Circuit
P259500: Turbocharger Speed Sensor "B" Circuit
Fault type Fault status
Range/Performance
Range/Performance
Range/Performance
Range/Performance
Low
Low
static
static
static
static
static
static
New customer code
Object of complaint
Complaint type
information, navigation, communication, entertainment -> symbolic fault indicators -> emission control system
fault indicator
engine -> engine operation
functionality ->
activates
functionality
Vehicle data
W12-New Continental GT-New Continental GTC-New Flying Spur
Sales types
Type
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S41BB
3S41BB
3S41BB
3S41BB
ZG21BB
ZG21BB
ZG21BB
MY
2018
2019
2020
2021
2022
2019
2020
2021
2022
2020
2021
2022
Brand Designation Engine code
E
*
E
*
E
*
E
*
E
*
E
*
E
*
E
*
E
*
E
*
E
*
E
*
Documents
Document name
master.xml
Gearbox code
*
*
*
*
*
*
*
*
*
*
*
*
Final drive code
*
*
*
*
*
*
*
*
*
*
*
*
Position
Technical product information
W12 Engine management light on - Turbocharger speed sensor DTC's stored
Transaction No.: 2053348/5
Customer statement / workshop findings
Customer statement:
•
The engine management light is on.
Workshop findings:
The customer statement can be reproduced.
Either of the following DTC’s are stored in address 01 – Engine Control Module 1 or address 11 – Engine Control Module 2
•
P257900: Turbocharger Speed Sensor “A” – Circuit Range/Performance
Or
•
P259400: Turbocharger Speed Sensor “B” – Circuit Range/Performance
Or
•
P259500: Turbocharger Speed Sensor “B” – Circuit low
Technical background
*
Production change
*
Measure
Ask the customer under what driving conditions they experienced the complaint; duration driven, throttle load (was it under harsh or light
acceleration), what gradient they were driving on etc. and feedback via a DISS technical enquiry.
1) Referring to Rep.Gr 24 - Remove the air filter top cover
•
Inspect for damage or missing components NOTE: The example in Figure 1 shows an air filter box divider that has become detached,
causing DTC - P259400: Turbocharger Speed Sensor “B” – Circuit Range/Performance
•
Reattach the divider and retest the vehicle if this particular fault is found
Figure 1
•
Should no issues be found in the air filter box please continue with the remaining instructions from step 2
2) Road test the vehicle to try and reproduce the complaint, carry out an extensive test if required.
•
Drive the vehicle under the same driving conditions as when the customer experienced the complaint
•
Use light and hard acceleration cycles
3) Check the intake and exhaust systems for air leaks, if a leak is detected rectify the leak.
4) Carry out the test plan for the affected Turbocharger speed sensor, if wiring checks are suggested also carry out the following manual wiring
checks for the affected sensor;
•
Open circuit
•
Short circuit to ground
•
Short circuit to B+
•
Short circuit of the wires to each other
If the wiring tests OK then replace the affected Turbocharger speed sensor.
When replacing the Turbocharger speed sensor take extreme care not to damage the component, the sensor will be required back
at Bentley Motors Crewe for analysis.
A DISS technical query detailing your findings must be submitted.
Warranty accounting instructions
Due to the numerous possible scenarios/issues which could be evident, please use the Labour Operation times within Elsa Pro ensuring all
applicable/required information is supplied with each warranty claim
Parts information
Refer to the ETKA parts catalogue