No. 201-23-2 Service Bulletin/Repair Instructions

Service
Technical Information
201/23 ENU
2470
2
Message “Engine Control Fault” in Instrument Cluster/Fault Memory Entries for Fuel

Injectors in DME Control Unit (201/23)

Vehicle Type:
911 Carrera (992) / 911 Carrera 4 (992) / 911 Carrera T (992) / 911 Carrera S (992) / 911

Carrera 4S (992) / 911 Carrera GTS (992) / 911 Carrera 4 GTS (992) / 911 Dakar (992) / 911

Targa 4 (992) / 911 Targa 4S (992) / 911 Targa 4 GTS (992) / 911 Targa 4 (992) / 911 Targa

4S (992) / 911 Targa 4 GTS (992) / 911 Turbo (992) / 911 Turbo S (992)
Model Year:
As of 2020 up to 2023
Concerns:
DME control unit
Cause:
The message “Engine control system fault” is displayed in the instrument cluster.

Two or more of the following fault memory entries are stored in the DME control unit fault memory:

•

•

•

•

•

•
P020100 - Cylinder 1 fuel injector, electrical fault (009C42)

P020200 - Cylinder 2 fuel injector, electrical fault (009C43)

P020300 - Cylinder 3 fuel injector, electrical fault (009C45)

P020400 - Cylinder 4 fuel injector, electrical fault (009C47)

P020500 - Cylinder 5 fuel injector, electrical fault (009C4A)

P020600 - Cylinder 6 fuel injector, electrical fault (009C4B)
Information

It is essential to ensure that the fault memory entries always only affect two fuel injectors opposite to

each other.

•
Cylinder 1 and cylinder 4
•
Cylinder 2 and cylinder 5
•
Cylinder 3 and cylinder 6
If this is not the case, this TI cannot be used as a remedy for the complaint; the cause of the error is not

corrected by this programming.

Action:
In the event of a customer complaint, re-program the DME control unit using the PIWIS Tester.

Information

The minimum programming requirement is the PIWIS Tester software release: 42.300.050
AfterSales
Jan 3, 2024

Page 1 of 6
2
Service
Technical Information
ENU 201/23
2470
Information

In the event that the software update does not provide a remedy, proceed as follows:

•
Check the affected injector line for chafing points and, if there is damage, repair the wire harness.
•
If the injector wire harness is normal, perform fault diagnosis on the DME control unit (DME control

unit may have an internal defect).
Required tools

Tools:
•

•
P90999 - PIWIS Tester 4

Battery charger with a current rating of at least 90 A, e.g., VAS 5908 90-A battery charger. For

further information about the battery chargers to be used, see the corresponding Workshop Manual.

 Workshop Manual '270689 Charging vehicle electrical system and battery'
Re-programming DME control unit

1
The basic work procedure for control unit programming is described in the Workshop Manual 

Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the

PIWIS Tester - section on “Programming”'.

Specific information on control unit programming as part of this Technical Information:

Required PIWIS Tester software release:
42.300.050 (or higher)
Type of control unit programming:
Control unit programming using the “Automatic

programming” function of the DME control unit.

“Motor electronics (DME)” control unit –

“Coding/programming” menu – “Automatic

programming” function.
Programming sequence:
Read and follow the information and instructions

on the PIWIS Tester during the guided

programming sequence.

During the programming sequence, the DME

control unit is re-programmed and then automaticallyre-coded.

Do not interrupt programming and coding.

Once the control units have been programmed and

coded, you will be prompted to switch the ignition off

and then back on again after a certain waiting time.

Backup documentation of the new software versions

is then performed.
Jan 3, 2024

Page 2 of 6
AfterSales
Service
Technical Information
2
201/23 ENU
2470
2
Programming time (approx.):
Programming takes up to 15 minutes, depending

on equipment.
Data set for the motor electronics (DME)

programmed as part of this programming:
See section:  Technical Information '9X00IN

Overview of programmed DME data records'.
Procedure in the event of error messages

appearing during the programming

sequence:
 Workshop Manual '9X00IN Basic instructions and
Procedure in the event of a termination in

the control unit programming:
Repeat control unit programming by restarting

programming.
procedure for control unit programming using the

PIWIS Tester'.
Read out and delete all control unit fault memories.

2.1
Press •F7“ in the control unit selection screen (“Overview” menu) to call up the Additional

menu.
2.2
Select the “Read all error memories and delete if necessary” and press •F12“ (‘Next’) to

confirm.
3
Exit the diagnostic application. Switch off ignition. Disconnect Tester from vehicle.
4
Switch off and disconnect the battery charger.
Information

In the event that the software update does not provide a remedy, proceed as follows:

•
Check the affected injector line for chafing points and, if there is damage, repair the wire harness.
•
If the injector wire harness is normal, perform fault diagnosis on the DME control unit (DME control

unit may have an internal defect).
Overview of programmed DME data records

Information

The software part number and software release of the programmed data record are based on the

specified PIWIS Tester test software release. Please note that this may be different in a later release.

Overview:
911 Carrera (992) / 911 Carrera 4 (992) / 911 Carrera T (992) / 911 Targa 4 (992)

•
with Porsche Doppelkupplung (PDK)

Exhaust

emission

standard

ULEV 70 gr. Cat
Model year

2020

(L)

–
2021

(M)

X
2022

(N)

X
AfterSales
2023

(P)

X
Porsche

part number

(software)
Software

release
992906021CA
0001
Jan 3, 2024

Page 3 of 6
2
Service
Technical Information
ENU 201/23
2470
911 Carrera T (992)

•
with manual transmission

Exhaust

emission

standard

ULEV 70 gr. Cat
Model year

2020

(L)
2021

(M)
–
–
2022

(N)

–
2023

(P)

X
Porsche

part number

(software)
Software

release
992906021CE
0001
911 Carrera S (992) / 911 Carrera 4S (992) / 911 Targa 4S (992)

•
with Porsche Doppelkupplung (PDK)

Exhaust

emission

standard

ULEV 70 gr. Cat
Model year

2020

(L)
2021

(M)

SaleBestseller No. 1

VDIAGTOOL Bidirectional Scan Tool VD70 Lite, OBD2 Scanner Diagnostic Tool with 31+ Resets, 2026 Scanner for Car, Full System Scan, CAN FD & DoIP, Free Update

Affordable Solution for Professional-grade Car Diagnostics & Repair: As the budget-friendly OBD2 scanner under $300, the VD70 Lite car diagnostic tool offers 31+ hot resets, full bi-directional controls with 4000+ active tests, all system diagnostics, 8-in-One live data graphing (export as CSV Export/Recording/Playback), CAN FD & DoIP protocols, and long-term free update. Additional features include Auto VIN & Auto Scan, diagnostic report sharing/printing, with coverage for over 10,000 vehicle models worldwide, suitable for DIYers, Car Owners, Technicians, and Mechanics on car repairs and maintenance tasks.
OBD2 Scanner with Full Bi-directional Control: The Bidirectional scan tool VIDAGTOOL VD70 Lite performs 4000+ active tests that can send execution commands to the ECU module and identify the repair status, covering for windows, doors, ABS, valves, wipers, headlights, rear mirrors, sunroof,and more in-vehicle components. This bidirectional OBD2 scanner is a must-have diagnostic tool for auto technicians and mechanics on a budget! The available function tests vary by model—please check compatibility via vdiagtool2 @ outlook . c o m before purchase.
OE All Systems Diagnostics & 8-IN-One Data Graphing: VD70 Lite is a dealer-level car scanner diagnostic tool with Auto VIN that can do in-depth diagnostics for 100+ modern car brands, covering all systems including engine, transmission, airbag, ABS, ESP, TPMS, radio, etc, to read/clear code, view live data, freeze frame, and read ECU info. This advanced OBD2 Scanner with 8-in-one data graphing and detailed diagnostic reports makes data viewing more intuitive, ensures quickly accurate repairs by identifying issues, and easily masters the car situation.
Stay Ahead with 31+ Reset for Faster & Easier Repairs: VDIAGTOOL VD70 Lite scanner for car meets almost all daily maintenance needs for both home mechanics and workshops as a professional automotive scan tool. It can perform Oil Reset, ABS Bleed, Crank Sensor Relearn, Idle Relearn, Injector Coding, Window Initialization, HVAC Calibration, Suspension Calibration, Throttle Matching, etc, ensuring efficient repairs and complete maintenance. Besides, long-term free updates keep its functionality and broad vehicle compatibility up to date. Functions vary by model, please send us the Vehicle Model, Year, VIN for compatibility before purchase.
150+ Models, 10000+ Car Coverage & 22 Languages：As a powerful car computer diagnostic tool, VD70 Lite helps you to quickly troubleshoot issues for 95% of US, European, and Asian vehicles. Supporting 22 languages makes it a global car diagnostic scanner for auto mechanics worldwide without language barriers. Note: Simply provide your tool’s S/N and reach out to vdiagtool2 @ outlook . c o m to change the menu language.

Bestseller No. 2

Bidirectional Scan Tool VDIAGTOOL VD80 BT, 2026 Topology Mapping OBD2 Scanner for Car, 8" Wireless Full System Diagnostic Tool with 42+ Resets, ECU Coding, FCA AutoAuth, CAN FD/DoIP, 3 Years Update

Smarter Diagnostics, Broader Coverage, Greater Value Than $1,000+ Tools: The game-changing VD80BT OBD2 scanner delivers 4000+ active tests, 42+ hot services, advanced ECU coding, PMI & V.A.G Guided—all in one scanner for car. With OE-level full system scan and intelligent topology mapping that cuts diagnostic time by up to 50%, you'll work smarter and faster. Supporting FCA AutoAuth, CAN FD & DoIP protocols, this car scanner covers over 10,000 vehicle models worldwide. Built for serious pros and DIYers, it features 8" HD screen & 4+64GB storage, 7.3V fast charging with long-lasting battery, and 33–66ft stable wireless connection—making it the most complete diagnostic solution you’ll ever own
Intuitive Topology Map, Fast Locate Faults: Why waste time clicking module by module? VD80BT car diagnostic scanner takes diagnostics to the next level with its intuitive Topology Map—a premium feature usually found in $1000+ obd scanner. With one tap, it performs all system scan and presents all modules and DTCs in a clear, color-coded layout, boosting diagnostic efficiency by up to 200% and helping you locate issues instantly and reduce repair time and costs. Whether you're a pro boosting efficiency or a beginner learning diagnostics, this obd2 scanner diagnostic tool makes fault-finding faster and smarter for you. Note: varies by vehicle model, please check compatibility before purchase
Wireless Connectivity Simplifies Bi-Directional Control: With 4000+ active tests, including throttle reset, window calibration and solenoid check, VD80BT bidirectional scan tool lets you diagnose and verify functions faster, smarter, and more efficiently. This scanner for car redefines flexibility in bi-directional control through a fully wireless connection, freeing you from the constraints of wired car diagnostic tool in the workshop. Imagine actively controlling components like the A/C clutch, fuel injector, ABS pump, or radiator fan within a wireless range of 33–66ft around the vehicle—all while enjoying stable, high-speed wireless diagnostic and real-time data monitoring
42+ Hot Services, One Powerful Scanner for Car: Why pay a shop $100 just to reset a light? VD80BT car scanner diagnostic tool gives you 42+ hot services from basic resets to advanced maintenance tasks like Crank Sensor Relearn, Injector Coding, ABS Bleeding, Oil Reset, Throttle Relearn, EPB, BMS Reset, Tire Size Reset and more. Plus, it offers 100+ vehicle-specific features including Idle Relearn, VIN Write, Brake Fluid Replacement, Fuel Trim Reset, ABS Initialization and more. Whether you’re resetting TPMS or fixing a stubborn SAS, this car computer diagnostic reader delivers shop-grade precision at a fraction of the cost. Varies by model. Send VIN to verify compatibility before purchase
OE-Level Full System Diagnostics in Your Hands: Dominate diagnostics like a dealership with VD80BT scan tool for all vehicles, delivering factory-grade scanning for aLL systems—including ABS, SRS, ECM, TCM and more. View up to 8 PID graphs simultaneously to quickly catch intermittent issues and troubleshoot with confidence. Easily read and clear DTCs, retrieve freeze frame data, and run active tests for faster, more accurate repairs. It’s like having a dealership-grade scan tool in your pocket, complete with data playback and CSV export for in-depth analysis. Stop guessing and start fixing with surgical precision—professional diagnostics made simple and portable. Check compatibility Please

Bestseller No. 3

OBD2 Scanner Diagnostic Tool VDIAGTOOL D200, Wireless Bidirectional Scan Tool-Lifetime Free Updates, 26 Resets (Unlockable 49+), Full System Car Code Reader OBD2 Scanner Bluetooth for iOS & Android

【OE-Level Full System Diagnostics-Lifetime F*REE Software Updates】The VDIAGTOOL D200 OBD2 Scanner for cars is a all system bidirectional scan tool that enjoy lifetime f*ree software updates, delivers complete system coverage. reading/clearing codes across engine, transmission, ABS, SAS, EPB, TPMS plus full access to body, chassis, powertrain and all control modules. This D200 Bidirectional car scanner works with most 1996+ OBD2 gasoline and hybrid cars and light trucks. It does NOT support pure electric and heavy-duty trucks. PLEASE CHECK COMPATIBILITY BEFORE ORDERING or Contact us with VIN to confirm compatibility.
【Supports OBD2 Full Functions-ZERO Subscription Fees】D200 Bidirectional OBD2 Scanner is a upgarde of universal car code reader. It supports OBD2 full functions to help you turn off the annoying instrument fault indicator, such as read/clear codes, O2 sensor test, I/M readiness, on-board monitor test, datastream, freeze frame, E-VAP system test, and retrieve vehicle information. This professional obd2 scanner diagnostic tool can full access to diagnostics, reset tools and maintenance features with a single payment. NOTE: The fault code can only be cleared after the vehicle's malfunction has been repaired; please ensure the vehicle issue is fixed before clearing the code.
【D200 Hidden 2 Advantages: 1. $169 Expandable 49+ Advanced Resets. 2. $199 Get J2534 P*a*s*s-Thru Programming】Your core car diagnostics and 26 reset remain lifetime f*ree for everyday maintenance. When you need deeper repair capability, upgrade with 3-year access for $169 in Store on VDIAGTOOL App, gaining 49+ advanced resets. D200 configured with J2534 hardware, upgrade only when you need without replacing the entire device. You also can Lifetime Unlock for $199 in Store one-time, perform module programming, software re~flashing and ECU data updates directly. Supports 17+ major brands, including for BMW, for Audi, for GM, for Ford and more. Note:D200 does‘t provide any OE software.
【Full Bidirectional Control / Active Tests】The D200 car scanner diagnostic tool is a true bidirectional scan tool that lets you send commands directly to the vehicle’s ECU for active tests. Quickly test fuel pumps, relays, solenoids, injectors, cooling fans, windows, sunroofs and more to verify operation instantly. Get dealership-level diagnostic control at a fraction of the cost (ofter $100-200$ per diagnostic visit), reduce guessworkand confirm repairs faster, avoid unnecessary parts replacement, towing fees and wait times.
【26 F*ree Essential Reset & Relearn Functions – Everyday Maintenance Made Easy】Handle common maintenance and repair jobs without visiting the shop. The D200 code readers & scan tools includes 26 f*ree high-demand reset functions, including Oil Reset, EPB Service, SAS Calibration, ABS Brake Bleeding, Throttle Relearn, Injector Coding, Headlight Adjustment, Tire Size Reset and more. Perfect for home car owners, mechanics and DIYers – just plug and diagnose anytime, anywhere! Note: Service functions vary by vehicle model—please confirm compatibility.

This product presentation was made with AAWP plugin.

Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

Buffer Email Facebook Flipboard Hacker News LinkedIn Messenger Mix Pinterest Print Reddit SMS Telegram Tumblr X VK WhatsApp Line Xing Threads Bluesky Copy Mastodon Nextdoor